123412656204 has 72 divisors (see below), whose sum is σ = 332686907280. Its totient is φ = 38439124992.

The previous prime is 123412656167. The next prime is 123412656217. The reversal of 123412656204 is 402656214321.

123412656204 is a `hidden beast` number, since 1 + 2 + 3 + 4 + 1 + 26 + 5 + 620 + 4 = 666.

It is a super-2 number, since 2×123412656204² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 640309 + ... + 810444.

It is an arithmetic number, because the mean of its divisors is an integer number (4620651490).

Almost surely, 2^123412656204 is an apocalyptic number.

It is an amenable number.

123412656204 is an abundant number, since it is smaller than the sum of its proper divisors (209274251076).

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

123412656204 is a wasteful number, since it uses less digits than its factorization.

123412656204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1450919 (or 1450914 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The spelling of 123412656204 in words is "one hundred twenty-three billion, four hundred twelve million, six hundred fifty-six thousand, two hundred four".