102 (number)

From Wikipedia, the free encyclopedia

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

102
Cardinal one hundred [and] two
Ordinal 102nd
(one hundred [and] second)
Numeral system 102
Factorization 2 \cdot 3 \cdot 17
Divisors 1, 2, 3, 6, 17, 34, 51, 102
Roman numeral CII
Binary 1100110
Hexadecimal 66

Contents

[edit] 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.

[edit] In science

In astronomy,

  • The 102nd space shuttle lauch took place on 7th February 2001 when Atlantis took off from Edwards Air Force Base. It was the first space shuttle launch of the 21st Century

[edit] In other fields

102 is also:

[edit] In sports

[edit] See also

[edit] References

  • Wells, D. The Penguin Dictionary of Curious and Interesting Numbers London: Penguin Group. (1987): 133