120165556 has 48 divisors (see below), whose sum is σ = 244992384. Its totient is φ = 50512896.

The previous prime is 120165527. The next prime is 120165559. The reversal of 120165556 is 655561021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120165559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 515616 + ... + 515848.

It is an arithmetic number, because the mean of its divisors is an integer number (5104008).

Almost surely, 2^120165556 is an apocalyptic number.

It is an amenable number.

120165556 is an abundant number, since it is smaller than the sum of its proper divisors (124826828).

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

120165556 is a wasteful number, since it uses less digits than its factorization.

120165556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520 (or 518 counting only the distinct ones).

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

The square root of 120165556 is about 10962.0051085556. The cubic root of 120165556 is about 493.4691418570.

The spelling of 120165556 in words is "one hundred twenty million, one hundred sixty-five thousand, five hundred fifty-six".