202 (number): Difference between revisions
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==In mathematics== |
==In mathematics== |
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* 202 is a [[Smith number]] |
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202 is both a [[nontotient]] and a [[noncototient]], 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]]. |
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* 202 is a [[nontotient]] |
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* 202 is a [[noncototient]] |
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202 is a [[Smith number]] in base 10, because its factorization is 2 × 101, and 2 + 0 + 2 = 2 + 1 + 0 + 1 = 4. |
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==In other fields== |
==In other fields== |
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Revision as of 22:05, 1 July 2008
202 is the natural number following 201 and preceding 203. It may be written as "two hundred two" or "two hundred and two".
In mathematics
202 is both a nontotient and a noncototient, 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.
202 is a Smith number in base 10, because its factorization is 2 × 101, and 2 + 0 + 2 = 2 + 1 + 0 + 1 = 4.
In other fields
- Area code 202 is the area code assigned to Washington D.C.
- In 2005 James Stephenson 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"