120520539 has 24 divisors (see below), whose sum is σ = 177914880. Its totient is φ = 78593712.

The previous prime is 120520523. The next prime is 120520541. The reversal of 120520539 is 935025021.

120520539 is a `hidden beast` number, since 120 + 5 + 2 + 0 + 539 = 666.

It is not a de Polignac number, because 120520539 - 2⁴ = 120520523 is a prime.

It is not an unprimeable number, because it can be changed into a prime (120520559) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 139222 + ... + 140084.

It is an arithmetic number, because the mean of its divisors is an integer number (7413120).

Almost surely, 2^120520539 is an apocalyptic number.

120520539 is a deficient number, since it is larger than the sum of its proper divisors (57394341).

120520539 is a wasteful number, since it uses less digits than its factorization.

120520539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1191 (or 1188 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 120520539 is about 10978.1846860034. The cubic root of 120520539 is about 493.9545858583.

The spelling of 120520539 in words is "one hundred twenty million, five hundred twenty thousand, five hundred thirty-nine".