102439264 has 24 divisors (see below), whose sum is σ = 204112440. Its totient is φ = 50601216.

The previous prime is 102439261. The next prime is 102439277. The reversal of 102439264 is 462934201.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102439261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16629 + ... + 21940.

It is an arithmetic number, because the mean of its divisors is an integer number (8504685).

Almost surely, 2^102439264 is an apocalyptic number.

It is an amenable number.

102439264 is a deficient number, since it is larger than the sum of its proper divisors (101673176).

102439264 is an equidigital number, since it uses as much as digits as its factorization.

102439264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38662 (or 38654 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 102439264 is about 10121.2283839463. The cubic root of 102439264 is about 467.9026266357.

The spelling of 102439264 in words is "one hundred two million, four hundred thirty-nine thousand, two hundred sixty-four".