120557657 has 8 divisors (see below), whose sum is σ = 132099552. Its totient is φ = 109112800.

The previous prime is 120557653. The next prime is 120557663. The reversal of 120557657 is 756755021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 120557657 - 2² = 120557653 is a prime.

It is a super-2 number, since 2×120557657² = 29068297322659298, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 120557657.

It is not an unprimeable number, because it can be changed into a prime (120557653) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21644 + ... + 26637.

It is an arithmetic number, because the mean of its divisors is an integer number (16512444).

Almost surely, 2^120557657 is an apocalyptic number.

It is an amenable number.

120557657 is a deficient number, since it is larger than the sum of its proper divisors (11541895).

120557657 is a wasteful number, since it uses less digits than its factorization.

120557657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48519.

The product of its (nonzero) digits is 73500, while the sum is 38.

The square root of 120557657 is about 10979.8750903642. The cubic root of 120557657 is about 494.0052901464.

The spelling of 120557657 in words is "one hundred twenty million, five hundred fifty-seven thousand, six hundred fifty-seven".