120575721 has 12 divisors (see below), whose sum is σ = 187015632. Its totient is φ = 68900328.

The previous prime is 120575701. The next prime is 120575723. The reversal of 120575721 is 127575021.

It is not a de Polignac number, because 120575721 - 2⁷ = 120575593 is a prime.

It is not an unprimeable number, because it can be changed into a prime (120575723) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 409975 + ... + 410268.

It is an arithmetic number, because the mean of its divisors is an integer number (15584636).

Almost surely, 2^120575721 is an apocalyptic number.

It is an amenable number.

120575721 is a deficient number, since it is larger than the sum of its proper divisors (66439911).

120575721 is an equidigital number, since it uses as much as digits as its factorization.

120575721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 820260 (or 820253 counting only the distinct ones).

The product of its (nonzero) digits is 4900, while the sum is 30.

The square root of 120575721 is about 10980.6976554316. The cubic root of 120575721 is about 494.0299623410.

The spelling of 120575721 in words is "one hundred twenty million, five hundred seventy-five thousand, seven hundred twenty-one".