120640757 has 16 divisors (see below), whose sum is σ = 127767552. Its totient is φ = 113762880.

The previous prime is 120640753. The next prime is 120640759. The reversal of 120640757 is 757046021.

It is a cyclic number.

It is not a de Polignac number, because 120640757 - 2² = 120640753 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120640753) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 303683 + ... + 304079.

It is an arithmetic number, because the mean of its divisors is an integer number (7985472).

Almost surely, 2^120640757 is an apocalyptic number.

It is an amenable number.

120640757 is a deficient number, since it is larger than the sum of its proper divisors (7126795).

120640757 is a wasteful number, since it uses less digits than its factorization.

120640757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 668.

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 120640757 is about 10983.6586345352. The cubic root of 120640757 is about 494.1187694889.

Adding to 120640757 its reverse (757046021), we get a palindrome (877686778).

The spelling of 120640757 in words is "one hundred twenty million, six hundred forty thousand, seven hundred fifty-seven".