Английская Википедия:122 (number)
Материал из Онлайн справочника
122 (one hundred [and] twenty-two) is the natural number following 121 and preceding 123.
In mathematics
122 is a nontotient since there is no integer with exactly 122 coprimes below it. Nor is there an integer with exactly 122 integers with common factors below it, making 122 a noncototient.
122 is a semiprime.
122 is the sum of squares of the divisors of 11.
φ(122) = φ(σ(122)).[1]
In telephony
- The fire emergency telephone number in Austria[2]
- The police emergency telephone number in Egypt
- The traffic emergency telephone number in China
- The police emergency telephone number in Bosnia and Herzegovina
In other fields
122 is also:
- The atomic number of the chemical element unbibium
- The number of men of Michmas at the census (Bible, Nehemiah 7:31)
- The Enroute Flight Advisory Service (EFAS) "Flight Watch" frequency: 122.0 MHz
- The oldest age in years to which a human being has ever been authenticated to live (Jeanne Calment).
See also
References
