122 (number)
Appearance
| ||||
---|---|---|---|---|
Cardinal | one hundred twenty-two | |||
Ordinal | 122nd (one hundred twenty-second) | |||
Factorization | 2 × 61 | |||
Divisors | 1, 2, 61, 122 | |||
Greek numeral | ΡΚΒ´ | |||
Roman numeral | CXXII | |||
Binary | 11110102 | |||
Ternary | 111123 | |||
Senary | 3226 | |||
Octal | 1728 | |||
Duodecimal | A212 | |||
Hexadecimal | 7A16 |
122 (one hundred [and] twenty-two) is the natural number following 121 and preceding 123.
In mathematics
It 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.
In telephony
- The fire emergency telephone number in Austria[1]
- 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
See also
References
- ^ Porter, Darwin; Danforth Prince (2009). Frommer's Austria. Hoboken, New Jersey: Frommer's. p. 482. ISBN 978-0-470-39897-5.