102156 has 12 divisors (see below), whose sum is σ = 238392. Its totient is φ = 34048.

The previous prime is 102149. The next prime is 102161. The reversal of 102156 is 651201.

It is a tau number, because it is divible by the number of its divisors (12).

It is a zygodrome in base 2.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4245 + ... + 4268.

It is an arithmetic number, because the mean of its divisors is an integer number (19866).

2¹⁰²¹⁵⁶ is an apocalyptic number.

It is an amenable number.

102156 is an abundant number, since it is smaller than the sum of its proper divisors (136236).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102156 is a wasteful number, since it uses less digits than its factorization.

102156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8520 (or 8518 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 102156 is about 319.6185226172. The cubic root of 102156 is about 46.7470948656.

Adding to 102156 its reverse (651201), we get a palindrome (753357).

The spelling of 102156 in words is "one hundred two thousand, one hundred fifty-six".