402440120 has 32 divisors (see below), whose sum is σ = 929966400. Its totient is φ = 156624768.

The previous prime is 402440113. The next prime is 402440147. The reversal of 402440120 is 21044204.

It is a super-2 number, since 2×402440120² = 323916100371228800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134480 + ... + 137439.

It is an arithmetic number, because the mean of its divisors is an integer number (29061450).

Almost surely, 2^402440120 is an apocalyptic number.

402440120 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

402440120 is an abundant number, since it is smaller than the sum of its proper divisors (527526280).

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

402440120 is a wasteful number, since it uses less digits than its factorization.

402440120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271967 (or 271963 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 402440120 is about 20060.9102485406. The cubic root of 402440120 is about 738.3015099170.

Adding to 402440120 its reverse (21044204), we get a palindrome (423484324).

It can be divided in two parts, 4024 and 40120, that added together give a palindrome (44144).

The spelling of 402440120 in words is "four hundred two million, four hundred forty thousand, one hundred twenty".