252421232 has 40 divisors (see below), whose sum is σ = 588355200. Its totient is φ = 102485952.

The previous prime is 252421217. The next prime is 252421271. The reversal of 252421232 is 232124252.

It is a junction number, because it is equal to n+sod(n) for n = 252421198 and 252421207.

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 7 ways as a sum of consecutive naturals, for example, 57182 + ... + 61437.

It is an arithmetic number, because the mean of its divisors is an integer number (14708880).

Almost surely, 2^252421232 is an apocalyptic number.

It is an amenable number.

252421232 is an abundant number, since it is smaller than the sum of its proper divisors (335933968).

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

252421232 is a wasteful number, since it uses less digits than its factorization.

252421232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118653 (or 118647 counting only the distinct ones).

The product of its digits is 1920, while the sum is 23.

The square root of 252421232 is about 15887.7698875582. The cubic root of 252421232 is about 631.9877020520.

Adding to 252421232 its reverse (232124252), we get a palindrome (484545484).

The spelling of 252421232 in words is "two hundred fifty-two million, four hundred twenty-one thousand, two hundred thirty-two".