120257515 has 16 divisors (see below), whose sum is σ = 168292800. Its totient is φ = 82461120.

The previous prime is 120257509. The next prime is 120257531. The reversal of 120257515 is 515752021.

It is not a de Polignac number, because 120257515 - 2⁹ = 120257003 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33346 + ... + 36775.

It is an arithmetic number, because the mean of its divisors is an integer number (10518300).

Almost surely, 2^120257515 is an apocalyptic number.

120257515 is a deficient number, since it is larger than the sum of its proper divisors (48035285).

120257515 is an frugal number, since it uses more digits than its factorization.

120257515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70147 (or 70133 counting only the distinct ones).

The product of its (nonzero) digits is 3500, while the sum is 28.

The square root of 120257515 is about 10966.1987488829. The cubic root of 120257515 is about 493.5949886735.

The spelling of 120257515 in words is "one hundred twenty million, two hundred fifty-seven thousand, five hundred fifteen".