102 103 → Factorization 2 × 3 × 17 | Cardinal one hundred two Roman numeral CII | |

Ordinal 102nd
(one hundred and second) Divisors 1, 2, 3, 6, 17, 34, 51, 102 |

**102** (**one hundred [and] two**) is the natural number following 101 and preceding 103.

## Contents

## In mathematics

102 is an abundant number and semiperfect number. It is a sphenic number. It is the sum of four consecutive prime numbers (19 + 23 + 29 + 31).

The sum of Euler's totient function φ(*x*) over the first eighteen integers is 102.

102 is the third 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.

## In science

## In other fields

102 is also:

## References

102 (number) Wikipedia(Text) CC BY-SA