120155656 has 16 divisors (see below), whose sum is σ = 228655440. Its totient is φ = 59180880.

The previous prime is 120155653. The next prime is 120155663. The reversal of 120155656 is 656551021.

It is not an unprimeable number, because it can be changed into a prime (120155653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111550 + ... + 112621.

It is an arithmetic number, because the mean of its divisors is an integer number (14290965).

Almost surely, 2^120155656 is an apocalyptic number.

It is an amenable number.

120155656 is a deficient number, since it is larger than the sum of its proper divisors (108499784).

120155656 is a wasteful number, since it uses less digits than its factorization.

120155656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224244 (or 224240 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 31.

The square root of 120155656 is about 10961.5535395308. The cubic root of 120155656 is about 493.4555897798.

It can be divided in two parts, 12015 and 5656, that added together give a palindrome (17671).

The spelling of 120155656 in words is "one hundred twenty million, one hundred fifty-five thousand, six hundred fifty-six".