120667521 has 36 divisors (see below), whose sum is σ = 181070448. Its totient is φ = 71443008.

The previous prime is 120667517. The next prime is 120667541. The reversal of 120667521 is 125766021.

It is not a de Polignac number, because 120667521 - 2² = 120667517 is a prime.

It is not an unprimeable number, because it can be changed into a prime (120667511) 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 35 ways as a sum of consecutive naturals, for example, 426246 + ... + 426528.

Almost surely, 2^120667521 is an apocalyptic number.

It is an amenable number.

120667521 is a deficient number, since it is larger than the sum of its proper divisors (60402927).

120667521 is a wasteful number, since it uses less digits than its factorization.

120667521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370 (or 328 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 120667521 is about 10984.8769223874. The cubic root of 120667521 is about 494.1553066626.

The spelling of 120667521 in words is "one hundred twenty million, six hundred sixty-seven thousand, five hundred twenty-one".