120815156 has 48 divisors (see below), whose sum is σ = 264929280. Its totient is φ = 46833120.

The previous prime is 120815087. The next prime is 120815203. The reversal of 120815156 is 651518021.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67805 + ... + 69563.

It is an arithmetic number, because the mean of its divisors is an integer number (5519360).

Almost surely, 2^120815156 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 120815156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132464640).

120815156 is an abundant number, since it is smaller than the sum of its proper divisors (144114124).

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

120815156 is a wasteful number, since it uses less digits than its factorization.

120815156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2004 (or 2002 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 29.

The square root of 120815156 is about 10991.5947887465. The cubic root of 120815156 is about 494.3567551975.

The spelling of 120815156 in words is "one hundred twenty million, eight hundred fifteen thousand, one hundred fifty-six".