120398915 has 48 divisors (see below), whose sum is σ = 187927488. Its totient is φ = 72099072.

The previous prime is 120398911. The next prime is 120398917. The reversal of 120398915 is 519893021.

It is not a de Polignac number, because 120398915 - 2² = 120398911 is a prime.

It is not an unprimeable number, because it can be changed into a prime (120398911) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 163889 + ... + 164621.

It is an arithmetic number, because the mean of its divisors is an integer number (3915156).

Almost surely, 2^120398915 is an apocalyptic number.

120398915 is a deficient number, since it is larger than the sum of its proper divisors (67528573).

120398915 is a wasteful number, since it uses less digits than its factorization.

120398915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 796 (or 777 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 38.

The square root of 120398915 is about 10972.6439384498. The cubic root of 120398915 is about 493.7883708897.

The spelling of 120398915 in words is "one hundred twenty million, three hundred ninety-eight thousand, nine hundred fifteen".