120423144 has 32 divisors (see below), whose sum is σ = 301641120. Its totient is φ = 40063296.

The previous prime is 120423143. The next prime is 120423157. The reversal of 120423144 is 441324021.

It is a super-2 number, since 2×120423144² = 29003467221689472, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 120423144.

It is not an unprimeable number, because it can be changed into a prime (120423143) 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 7 ways as a sum of consecutive naturals, for example, 8542 + ... + 17714.

It is an arithmetic number, because the mean of its divisors is an integer number (9426285).

Almost surely, 2^120423144 is an apocalyptic number.

It is an amenable number.

120423144 is an abundant number, since it is smaller than the sum of its proper divisors (181217976).

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

120423144 is a wasteful number, since it uses less digits than its factorization.

120423144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9729 (or 9725 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 120423144 is about 10973.7479468047. The cubic root of 120423144 is about 493.8214918858.

Adding to 120423144 its reverse (441324021), we get a palindrome (561747165).

The spelling of 120423144 in words is "one hundred twenty million, four hundred twenty-three thousand, one hundred forty-four".