102 (number)
Natural number
From Wikipedia, the free encyclopedia
102 (one hundred [and] two) is the natural number following 101 and preceding 103.
Cardinalone hundred two
Ordinal102nd
(one hundred second)
(one hundred second)
Factorization2 Ã 3 Ã 17
Divisors1, 2, 3, 6, 17, 34, 51, 102
| ||||
|---|---|---|---|---|
| Cardinal | one hundred two | |||
| Ordinal | 102nd (one hundred second) | |||
| Factorization | 2 Ã 3 Ã 17 | |||
| Divisors | 1, 2, 3, 6, 17, 34, 51, 102 | |||
| Greek numeral | Ρδ | |||
| Roman numeral | CII, cii | |||
| Binary | 11001102 | |||
| Ternary | 102103 | |||
| Senary | 2506 | |||
| Octal | 1468 | |||
| Duodecimal | 8612 | |||
| Hexadecimal | 6616 | |||
In mathematics
102 is an abundant number and a semiperfect number. It is a sphenic number.
The sum of Euler's totient function Ï(x) over the first eighteen integers is 102.
102 is the first three-digit base 10 polydivisible number, since 1 is divisible by 1, 10 is divisible by 2 and 102 is divisible by 3. This also shows that 102 is a Harshad number. 102 is the first 3-digit number divisible by the numbers 3, 6, 17, 34 and 51.
There are 102 vertices in the BiggsâSmith graph.
In other fields
102 is also:
- The emergency telephone number for police in Azerbaijan, Mongolia, Ukraine and Belarus
- The emergency telephone number for fire in Israel
- The emergency telephone number for ambulance in parts of India
- The emergency telephone number for ambulance in Maldives
References
- Wells, D. The Penguin Dictionary of Curious and Interesting Numbers London: Penguin Group. (1987): 133
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