402442152 has 32 divisors (see below), whose sum is σ = 1149835200. Its totient is φ = 114983424.

The previous prime is 402442141. The next prime is 402442169. The reversal of 402442152 is 251244204.

It is a happy number.

It is a super-2 number, since 2×402442152² = 323919371412782208, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 1197577 + ... + 1197912.

It is an arithmetic number, because the mean of its divisors is an integer number (35932350).

Almost surely, 2^402442152 is an apocalyptic number.

402442152 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

402442152 is an abundant number, since it is smaller than the sum of its proper divisors (747393048).

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

402442152 is a wasteful number, since it uses less digits than its factorization.

402442152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2395505 (or 2395501 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 24.

The square root of 402442152 is about 20060.9608942344. The cubic root of 402442152 is about 738.3027525252.

Adding to 402442152 its reverse (251244204), we get a palindrome (653686356).

The spelling of 402442152 in words is "four hundred two million, four hundred forty-two thousand, one hundred fifty-two".