120742556 has 24 divisors (see below), whose sum is σ = 234420480. Its totient is φ = 53951600.

The previous prime is 120742547. The next prime is 120742627. The reversal of 120742556 is 655247021.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20660 + ... + 25851.

It is an arithmetic number, because the mean of its divisors is an integer number (9767520).

Almost surely, 2^120742556 is an apocalyptic number.

It is an amenable number.

120742556 is a deficient number, since it is larger than the sum of its proper divisors (113677924).

120742556 is a wasteful number, since it uses less digits than its factorization.

120742556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46585 (or 46583 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 120742556 is about 10988.2917689694. The cubic root of 120742556 is about 494.2577127344.

Adding to 120742556 its reverse (655247021), we get a palindrome (775989577).

The spelling of 120742556 in words is "one hundred twenty million, seven hundred forty-two thousand, five hundred fifty-six".