Английская Википедия:102 (number)
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Шаблон:Infobox number 102 (one hundred [and] two) is the natural number following 101 and preceding 103.
In mathematics
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.
There are 102 vertices in the Biggs-Smith graph.
In science
- The atomic number of nobelium, an actinide.
In other fields
102 is also:
- The emergency telephone number for police in Azerbaijan, 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
See also
- List of highways numbered 102
- One Hundred and Two, a song by The Judds
References
- Wells, D. The Penguin Dictionary of Curious and Interesting Numbers London: Penguin Group. (1987): 133
