120515840 has 36 divisors (see below), whose sum is σ = 288676164. Its totient is φ = 48205824.

The previous prime is 120515821. The next prime is 120515887. The reversal of 120515840 is 48515021.

It can be written as a sum of positive squares in 2 ways, for example, as 45589504 + 74926336 = 6752^2 + 8656^2 .

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 45797 + ... + 48356.

Almost surely, 2^120515840 is an apocalyptic number.

120515840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120515840 is an abundant number, since it is smaller than the sum of its proper divisors (168160324).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

120515840 is an frugal number, since it uses more digits than its factorization.

120515840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94174 (or 94160 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 26.

The square root of 120515840 is about 10977.9706685708. The cubic root of 120515840 is about 493.9481661427.

The spelling of 120515840 in words is "one hundred twenty million, five hundred fifteen thousand, eight hundred forty".