120402544 has 20 divisors (see below), whose sum is σ = 245558440. Its totient is φ = 57032640.

The previous prime is 120402521. The next prime is 120402553. The reversal of 120402544 is 445204021.

It is a happy number.

It is a super-4 number, since 4×120402544⁴ (a number of 33 digits) contains 4444 as substring.

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 3 ways as a sum of consecutive naturals, for example, 197727 + ... + 198334.

It is an arithmetic number, because the mean of its divisors is an integer number (12277922).

Almost surely, 2^120402544 is an apocalyptic number.

It is an amenable number.

120402544 is an abundant number, since it is smaller than the sum of its proper divisors (125155896).

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

120402544 is a wasteful number, since it uses less digits than its factorization.

120402544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396088 (or 396082 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 120402544 is about 10972.8093029998. The cubic root of 120402544 is about 493.7933320086.

Adding to 120402544 its reverse (445204021), we get a palindrome (565606565).

The spelling of 120402544 in words is "one hundred twenty million, four hundred two thousand, five hundred forty-four".