120575821 has 16 divisors (see below), whose sum is σ = 130387968. Its totient is φ = 111218800.

The previous prime is 120575809. The next prime is 120575857. The reversal of 120575821 is 128575021.

It is not a de Polignac number, because 120575821 - 2⁵ = 120575789 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 (120575801) 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, 75966 + ... + 77536.

It is an arithmetic number, because the mean of its divisors is an integer number (8149248).

Almost surely, 2^120575821 is an apocalyptic number.

It is an amenable number.

120575821 is a deficient number, since it is larger than the sum of its proper divisors (9812147).

120575821 is a wasteful number, since it uses less digits than its factorization.

120575821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1712.

The product of its (nonzero) digits is 5600, while the sum is 31.

The square root of 120575821 is about 10980.7022088754. The cubic root of 120575821 is about 494.0300989162.

The spelling of 120575821 in words is "one hundred twenty million, five hundred seventy-five thousand, eight hundred twenty-one".