120907138920 has 32 divisors (see below), whose sum is σ = 362721417120. Its totient is φ = 32241903680.

The previous prime is 120907138909. The next prime is 120907138939. The reversal of 120907138920 is 29831709021.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 503779626 + ... + 503779865.

It is an arithmetic number, because the mean of its divisors is an integer number (11335044285).

Almost surely, 2^120907138920 is an apocalyptic number.

120907138920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120907138920 is an abundant number, since it is smaller than the sum of its proper divisors (241814278200).

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

120907138920 is a wasteful number, since it uses less digits than its factorization.

120907138920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1007559505 (or 1007559501 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 42.

The spelling of 120907138920 in words is "one hundred twenty billion, nine hundred seven million, one hundred thirty-eight thousand, nine hundred twenty".