102139664 has 20 divisors (see below), whose sum is σ = 215886480. Its totient is φ = 46427040.

The previous prime is 102139633. The next prime is 102139729. The reversal of 102139664 is 466931201.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 102139664.

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, 289994 + ... + 290345.

It is an arithmetic number, because the mean of its divisors is an integer number (10794324).

Almost surely, 2^102139664 is an apocalyptic number.

It is an amenable number.

102139664 is an abundant number, since it is smaller than the sum of its proper divisors (113746816).

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

102139664 is a wasteful number, since it uses less digits than its factorization.

102139664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580358 (or 580352 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 102139664 is about 10106.4169714098. The cubic root of 102139664 is about 467.4460292105.

The spelling of 102139664 in words is "one hundred two million, one hundred thirty-nine thousand, six hundred sixty-four".