120521135 has 12 divisors (see below), whose sum is σ = 168238008. Its totient is φ = 82642896.

The previous prime is 120521111. The next prime is 120521153. The reversal of 120521135 is 531125021.

It is a happy number.

It is not a de Polignac number, because 120521135 - 2²⁴ = 103743919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 245717 + ... + 246206.

It is an arithmetic number, because the mean of its divisors is an integer number (14019834).

Almost surely, 2^120521135 is an apocalyptic number.

120521135 is a deficient number, since it is larger than the sum of its proper divisors (47716873).

120521135 is an equidigital number, since it uses as much as digits as its factorization.

120521135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491942 (or 491935 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 120521135 is about 10978.2118307127. The cubic root of 120521135 is about 493.9554000942.

Adding to 120521135 its reverse (531125021), we get a palindrome (651646156).

The spelling of 120521135 in words is "one hundred twenty million, five hundred twenty-one thousand, one hundred thirty-five".