120615515 has 16 divisors (see below), whose sum is σ = 152821920. Its totient is φ = 91387872.

The previous prime is 120615487. The next prime is 120615533. The reversal of 120615515 is 515516021.

It is not a de Polignac number, because 120615515 - 2¹⁴ = 120599131 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32537 + ... + 36053.

It is an arithmetic number, because the mean of its divisors is an integer number (9551370).

Almost surely, 2^120615515 is an apocalyptic number.

120615515 is a deficient number, since it is larger than the sum of its proper divisors (32206405).

120615515 is an frugal number, since it uses more digits than its factorization.

120615515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3579 (or 3541 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 26.

The square root of 120615515 is about 10982.5095037519. The cubic root of 120615515 is about 494.0843051384.

It can be divided in two parts, 12061 and 5515, that added together give a cube (17576 = 26³).

The spelling of 120615515 in words is "one hundred twenty million, six hundred fifteen thousand, five hundred fifteen".