120655904 has 12 divisors (see below), whose sum is σ = 237541374. Its totient is φ = 60327936.

The previous prime is 120655903. The next prime is 120655957. The reversal of 120655904 is 409556021.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 117765904 + 2890000 = 10852^2 + 1700^2 .

It is a Harshad number since it is a multiple of its sum of digits (32), and also a Moran number because the ratio is a prime number: 3770497 = 120655904 / (1 + 2 + 0 + 6 + 5 + 5 + 9 + 0 + 4).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120655901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1885217 + ... + 1885280.

Almost surely, 2^120655904 is an apocalyptic number.

It is an amenable number.

120655904 is a deficient number, since it is larger than the sum of its proper divisors (116885470).

120655904 is an equidigital number, since it uses as much as digits as its factorization.

120655904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3770507 (or 3770499 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 120655904 is about 10984.3481372360. The cubic root of 120655904 is about 494.1394482489.

The spelling of 120655904 in words is "one hundred twenty million, six hundred fifty-five thousand, nine hundred four".