102 (number)
102 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 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.
In other fields
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