202 is the natural number

Natural number

In mathematics, the natural numbers are the ordinary whole numbers used for counting and ordering . These purposes are related to the linguistic notions of cardinal and ordinal numbers, respectively...

 following 201

201 (number)

201 is the natural number following 200 and preceding 202. It may be written as "two hundred one" or "two hundred and one".-In mathematics:As the two factors of 201 are both Gaussian primes, 201 is a Blum integer.201 is a Harshad number in base 10....

 and preceding 203

203 (number)

203 is the natural number following 202 and preceding 204. It may be written as "two hundred three" or "two hundred and three".-In mathematics:203 is the 6th Bell number, i.e. it is the number of partitions of a set of size 6...

. It may be written as "two hundred two" or "two hundred and two".

In mathematics

202 is both a nontotient

Nontotient

In number theory, a nontotient is a positive integer n which is not in the range of Euler's totient function φ, that is, for which φ = n has no solution. In other words, n is a nontotient if there is no integer x that has exactly n coprimes below it. All odd numbers are nontotients, except 1,...

 and a noncototient

Noncototient

In mathematics, a noncototient is a positive integer n that cannot be expressed as the difference between a positive integer m and the number of coprime integers below it. That is, m − φ = n, where φ stands for Euler's totient function, has no solution for m...

, meaning that there are no solutions to the equations φ(x) = 202 nor x - φ(x) = 202, with φ(x) being Euler's totient function

Euler's totient function

In number theory, the totient \varphi of a positive integer n is defined to be the number of positive integers less than or equal to n that are coprime to n In number theory, the totient \varphi(n) of a positive integer n is defined to be the number of positive integers less than or equal to n that...

.

202 is a Smith number

Smith number

A Smith number is a composite number for which, in a given base , the sum of its digits is equal to the sum of the digits in its prime factorization. For example, 378 = 2 × 3 × 3 × 3 × 7 is a Smith number since 3 + 7 + 8 =...

 in base 10, because its factorization is 2 × 101, and 2 + 0 + 2 = 2 + 1 + 0 + 1 = 4.

In other fields

• Area code 202
  Area code 202
  Image:Area code 202.svg|right|The area colored red indicates the geographical region of the District of Columbia, served by area code 202poly 0 50 49 54 103 84 111 88 101 107 118 130 143 139 179 140 211 188 238 203 260 240 259 248 248 250 255 262 253 357 1 357 Area codes 571 and 703poly 1 1 0...
  
   is the area code assigned to Washington D.C.
• HTTP status code 202 means the request was accepted but has not yet been fulfilled
• The E number
  E number
  E numbers are number codes for food additives that have been assessed for use within the European Union . They are commonly found on food labels throughout the European Union. Safety assessment and approval are the responsibility of the European Food Safety Authority...
  
   of the preservative potassium sorbate
  Potassium sorbate
  Potassium sorbate is the potassium salt of sorbic acid, chemical formula C6H7KO2. Its primary use is as a food preservative . Potassium sorbate is effective in a variety of applications including food, wine, and personal care products....
  
   is 202.
• An automobile : Peugeot 202
  Peugeot 202
  The Peugeot 202 was an automobile from Peugeot. Production of the car ran between 1938 and 1942 and then, after a brief production run of 20 in early 1945, restarted in mid-1946...
  
  .
• In 2005 James Stephenson
  James Stephenson (disambiguation)
  James Stephenson may refer to:*James Stephenson , U.S. Representative from Virginia*James W. Stephenson , American militia officer and politician*James Stephenson , British actor...
  
   wrote a book called "202 Ways to Supplement Your Retirement Income".
• Christopher J. McGinnis in 1994 wrote about "202 tips even the best businessman may not know"
• Jason Rich in 2006 wrote about "202 High-Paying Jobs You Can Land Without a College Degree"