120487920 has 80 divisors (see below), whose sum is σ = 426877440. Its totient is φ = 27539712.

The previous prime is 120487919. The next prime is 120488003. The reversal of 120487920 is 29784021.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

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, 34180 + ... + 37539.

It is an arithmetic number, because the mean of its divisors is an integer number (5335968).

Almost surely, 2^120487920 is an apocalyptic number.

120487920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120487920 is an abundant number, since it is smaller than the sum of its proper divisors (306389520).

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

120487920 is a wasteful number, since it uses less digits than its factorization.

120487920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71742 (or 71736 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 120487920 is about 10976.6989573369. The cubic root of 120487920 is about 493.9100187425.

The spelling of 120487920 in words is "one hundred twenty million, four hundred eighty-seven thousand, nine hundred twenty".