120661388 has 6 divisors (see below), whose sum is σ = 211157436. Its totient is φ = 60330692.

The previous prime is 120661379. The next prime is 120661399. The reversal of 120661388 is 883166021.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15082670 + ... + 15082677.

It is an arithmetic number, because the mean of its divisors is an integer number (35192906).

Almost surely, 2^120661388 is an apocalyptic number.

It is an amenable number.

120661388 is a deficient number, since it is larger than the sum of its proper divisors (90496048).

120661388 is a wasteful number, since it uses less digits than its factorization.

120661388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30165351 (or 30165349 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 120661388 is about 10984.5977623216. The cubic root of 120661388 is about 494.1469346063.

The spelling of 120661388 in words is "one hundred twenty million, six hundred sixty-one thousand, three hundred eighty-eight".