156420612 has 48 divisors (see below), whose sum is σ = 411606720. Its totient is φ = 51359616.

The previous prime is 156420601. The next prime is 156420613. The reversal of 156420612 is 216024651.

156420612 is a `hidden beast` number, since 1 + 5 + 6 + 42 + 0 + 612 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (156420613) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3573 + ... + 18044.

It is an arithmetic number, because the mean of its divisors is an integer number (8575140).

Almost surely, 2^156420612 is an apocalyptic number.

156420612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

156420612 is an abundant number, since it is smaller than the sum of its proper divisors (255186108).

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

156420612 is a wasteful number, since it uses less digits than its factorization.

156420612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21697 (or 21689 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 156420612 is about 12506.8226180753. The cubic root of 156420612 is about 538.8046398180.

The spelling of 156420612 in words is "one hundred fifty-six million, four hundred twenty thousand, six hundred twelve".