120521172 has 24 divisors (see below), whose sum is σ = 281407392. Its totient is φ = 40146400.

The previous prime is 120521153. The next prime is 120521209. The reversal of 120521172 is 271125021.

It is a congruent number.

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, 23347 + ... + 28037.

It is an arithmetic number, because the mean of its divisors is an integer number (11725308).

Almost surely, 2^120521172 is an apocalyptic number.

120521172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

120521172 is an abundant number, since it is smaller than the sum of its proper divisors (160886220).

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

120521172 is a wasteful number, since it uses less digits than its factorization.

120521172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6839 (or 6837 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 21.

The square root of 120521172 is about 10978.2135158686. The cubic root of 120521172 is about 493.9554506423.

Adding to 120521172 its reverse (271125021), we get a palindrome (391646193).

The spelling of 120521172 in words is "one hundred twenty million, five hundred twenty-one thousand, one hundred seventy-two".