120638659 has 4 divisors (see below), whose sum is σ = 122439304. Its totient is φ = 118838016.

The previous prime is 120638641. The next prime is 120638671. The reversal of 120638659 is 956836021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 120638659 - 2¹¹ = 120636611 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (120638689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 900222 + ... + 900355.

It is an arithmetic number, because the mean of its divisors is an integer number (30609826).

Almost surely, 2^120638659 is an apocalyptic number.

120638659 is a deficient number, since it is larger than the sum of its proper divisors (1800645).

120638659 is an equidigital number, since it uses as much as digits as its factorization.

120638659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1800644.

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 120638659 is about 10983.5631286027. The cubic root of 120638659 is about 494.1159051523.

The spelling of 120638659 in words is "one hundred twenty million, six hundred thirty-eight thousand, six hundred fifty-nine".