120638805 has 16 divisors (see below), whose sum is σ = 220596864. Its totient is φ = 55149120.

The previous prime is 120638797. The next prime is 120638821. The reversal of 120638805 is 508836021.

It is a happy number.

It is not a de Polignac number, because 120638805 - 2³ = 120638797 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 574366 + ... + 574575.

It is an arithmetic number, because the mean of its divisors is an integer number (13787304).

Almost surely, 2^120638805 is an apocalyptic number.

120638805 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

120638805 is a deficient number, since it is larger than the sum of its proper divisors (99958059).

120638805 is a wasteful number, since it uses less digits than its factorization.

120638805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1148956.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 120638805 is about 10983.5697748956. The cubic root of 120638805 is about 494.1161044828.

The spelling of 120638805 in words is "one hundred twenty million, six hundred thirty-eight thousand, eight hundred five".