123918656 has 28 divisors (see below), whose sum is σ = 253837440. Its totient is φ = 59959680.

The previous prime is 123918637. The next prime is 123918667. The reversal of 123918656 is 656819321.

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, 29246 + ... + 33213.

Almost surely, 2^123918656 is an apocalyptic number.

123918656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

123918656 is an abundant number, since it is smaller than the sum of its proper divisors (129918784).

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

123918656 is an equidigital number, since it uses as much as digits as its factorization.

123918656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62502 (or 62492 counting only the distinct ones).

The product of its digits is 77760, while the sum is 41.

The square root of 123918656 is about 11131.8756730391. The cubic root of 123918656 is about 498.5540303747.

The spelling of 123918656 in words is "one hundred twenty-three million, nine hundred eighteen thousand, six hundred fifty-six".