102040656 has 20 divisors (see below), whose sum is σ = 263605152. Its totient is φ = 34013536.

The previous prime is 102040649. The next prime is 102040667. The reversal of 102040656 is 656040201.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

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, 1062876 + ... + 1062971.

Almost surely, 2^102040656 is an apocalyptic number.

102040656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

102040656 is an abundant number, since it is smaller than the sum of its proper divisors (161564496).

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

102040656 is a wasteful number, since it uses less digits than its factorization.

102040656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2125858 (or 2125852 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 102040656 is about 10101.5175097606. The cubic root of 102040656 is about 467.2949424316.

Adding to 102040656 its reverse (656040201), we get a palindrome (758080857).

The spelling of 102040656 in words is "one hundred two million, forty thousand, six hundred fifty-six".