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102 (number) - Wikipedia

From Wikipedia, the free encyclopedia

Natural number

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

102 is an abundant number and a semiperfect number. It is a sphenic number.

The sum of Euler's totient function φ(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.

102⁶⁴ + 1 is a prime number.

There are 102 vertices in the Biggs–Smith graph.

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

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

Integers −1 0s

1000
- 1001
- 1023
- 1024
- 1089
- 1093
- 1105
- 1234
- 1289
- 1458
- 1510
- 1728
- 1729
- 1980
- 1987
2000
- 2016
- 2520
3000
- 3511
4000
- 4104
5000
- 5040
6000
- 6174
7000
- 7744
- 7825
8000
- 8128
- 8192
9000
- 9855
- 9999

10,000
- 16,807
20,000
30,000
40,000
50,000
60,000
- 64,079
- 65,535
- 65,536
- 65,537
70,000
80,000
90,000

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