120039904 has 24 divisors (see below), whose sum is σ = 236573568. Its totient is φ = 59957760.

The previous prime is 120039869. The next prime is 120039919. The reversal of 120039904 is 409930021.

It is a happy number.

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, 55809 + ... + 57919.

It is an arithmetic number, because the mean of its divisors is an integer number (9857232).

Almost surely, 2^120039904 is an apocalyptic number.

It is an amenable number.

120039904 is a deficient number, since it is larger than the sum of its proper divisors (116533664).

120039904 is a wasteful number, since it uses less digits than its factorization.

120039904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3898 (or 3890 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 120039904 is about 10956.2723587906. The cubic root of 120039904 is about 493.2970819884.

Adding to 120039904 its reverse (409930021), we get a palindrome (529969925).

The spelling of 120039904 in words is "one hundred twenty million, thirty-nine thousand, nine hundred four".