120687172 has 12 divisors (see below), whose sum is σ = 211283856. Its totient is φ = 60320360.

The previous prime is 120687157. The next prime is 120687173. The reversal of 120687172 is 271786021.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (120687173) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 11847 + ... + 19537.

It is an arithmetic number, because the mean of its divisors is an integer number (17606988).

Almost surely, 2^120687172 is an apocalyptic number.

It is an amenable number.

120687172 is a deficient number, since it is larger than the sum of its proper divisors (90596684).

120687172 is a wasteful number, since it uses less digits than its factorization.

120687172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11618 (or 11616 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 34.

The square root of 120687172 is about 10985.7713429690. The cubic root of 120687172 is about 494.1821300055.

The spelling of 120687172 in words is "one hundred twenty million, six hundred eighty-seven thousand, one hundred seventy-two".