120402036 has 18 divisors (see below), whose sum is σ = 304349682. Its totient is φ = 40134000.

The previous prime is 120402001. The next prime is 120402043. The reversal of 120402036 is 630204021.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 73205136 + 47196900 = 8556^2 + 6870^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 1672215 + ... + 1672286.

Almost surely, 2^120402036 is an apocalyptic number.

It is an amenable number.

120402036 is an abundant number, since it is smaller than the sum of its proper divisors (183947646).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

120402036 is a wasteful number, since it uses less digits than its factorization.

120402036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3344511 (or 3344506 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 120402036 is about 10972.7861548469. The cubic root of 120402036 is about 493.7926375400.

Adding to 120402036 its reverse (630204021), we get a palindrome (750606057).

The spelling of 120402036 in words is "one hundred twenty million, four hundred two thousand, thirty-six".