120509904 has 20 divisors (see below), whose sum is σ = 311317376. Its totient is φ = 40169952.

The previous prime is 120509891. The next prime is 120509971. The reversal of 120509904 is 409905021.

It is a happy number.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1255264 + ... + 1255359.

Almost surely, 2^120509904 is an apocalyptic number.

It is an amenable number.

120509904 is an abundant number, since it is smaller than the sum of its proper divisors (190807472).

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

120509904 is a wasteful number, since it uses less digits than its factorization.

120509904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2510634 (or 2510628 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 120509904 is about 10977.7003056196. The cubic root of 120509904 is about 493.9400562144.

The spelling of 120509904 in words is "one hundred twenty million, five hundred nine thousand, nine hundred four".