120156172 has 6 divisors (see below), whose sum is σ = 210273308. Its totient is φ = 60078084.

The previous prime is 120156161. The next prime is 120156241. The reversal of 120156172 is 271651021.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15019518 + ... + 15019525.

Almost surely, 2^120156172 is an apocalyptic number.

It is an amenable number.

120156172 is a deficient number, since it is larger than the sum of its proper divisors (90117136).

120156172 is a wasteful number, since it uses less digits than its factorization.

120156172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30039047 (or 30039045 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 25.

The square root of 120156172 is about 10961.5770763153. The cubic root of 120156172 is about 493.4562961489.

The spelling of 120156172 in words is "one hundred twenty million, one hundred fifty-six thousand, one hundred seventy-two".