120015972 has 24 divisors (see below), whose sum is σ = 311152800. Its totient is φ = 40005288.

The previous prime is 120015947. The next prime is 120015983. The reversal of 120015972 is 279510021.

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

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 555522 + ... + 555737.

It is an arithmetic number, because the mean of its divisors is an integer number (12964700).

Almost surely, 2^120015972 is an apocalyptic number.

120015972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

120015972 is an abundant number, since it is smaller than the sum of its proper divisors (191136828).

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

120015972 is a wasteful number, since it uses less digits than its factorization.

120015972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1111272 (or 1111264 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 27.

The square root of 120015972 is about 10955.1801445709. The cubic root of 120015972 is about 493.2642974171.

Adding to 120015972 its reverse (279510021), we get a palindrome (399525993).

The spelling of 120015972 in words is "one hundred twenty million, fifteen thousand, nine hundred seventy-two".