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102 (number)

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 11001102
Octal 1468
Duodecimal 8612

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 also:

References

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