120432591 has 6 divisors (see below), whose sum is σ = 173958200. Its totient is φ = 80288388.

The previous prime is 120432569. The next prime is 120432619. The reversal of 120432591 is 195234021.

It is not a de Polignac number, because 120432591 - 2⁷ = 120432463 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 (120432541) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6690691 + ... + 6690708.

Almost surely, 2^120432591 is an apocalyptic number.

120432591 is a deficient number, since it is larger than the sum of its proper divisors (53525609).

120432591 is a wasteful number, since it uses less digits than its factorization.

120432591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13381405 (or 13381402 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 120432591 is about 10974.1783747122. The cubic root of 120432591 is about 493.8344047127.

The spelling of 120432591 in words is "one hundred twenty million, four hundred thirty-two thousand, five hundred ninety-one".