120057021 has 12 divisors (see below), whose sum is σ = 198189472. Its totient is φ = 68603976.

The previous prime is 120057019. The next prime is 120057053. The reversal of 120057021 is 120750021.

It is not a de Polignac number, because 120057021 - 2¹ = 120057019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120056985 and 120057003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120057221) 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, 952771 + ... + 952896.

Almost surely, 2^120057021 is an apocalyptic number.

It is an amenable number.

120057021 is a deficient number, since it is larger than the sum of its proper divisors (78132451).

120057021 is a wasteful number, since it uses less digits than its factorization.

120057021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1905680 (or 1905677 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 18.

The square root of 120057021 is about 10957.0534816619. The cubic root of 120057021 is about 493.3205279831.

The spelling of 120057021 in words is "one hundred twenty million, fifty-seven thousand, twenty-one".