120757521 has 16 divisors (see below), whose sum is σ = 176855040. Its totient is φ = 72951120.

The previous prime is 120757513. The next prime is 120757573. The reversal of 120757521 is 125757021.

It is not a de Polignac number, because 120757521 - 2³ = 120757513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (120757321) 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, 44745 + ... + 47366.

It is an arithmetic number, because the mean of its divisors is an integer number (11053440).

Almost surely, 2^120757521 is an apocalyptic number.

It is an amenable number.

120757521 is a deficient number, since it is larger than the sum of its proper divisors (56097519).

120757521 is a wasteful number, since it uses less digits than its factorization.

120757521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92156.

The product of its (nonzero) digits is 4900, while the sum is 30.

The square root of 120757521 is about 10988.9726999388. The cubic root of 120757521 is about 494.2781315532.

It can be divided in two parts, 120757 and 521, that added together give a triangular number (121278 = T₄₉₂).

The spelling of 120757521 in words is "one hundred twenty million, seven hundred fifty-seven thousand, five hundred twenty-one".