252113140 has 12 divisors (see below), whose sum is σ = 529437636. Its totient is φ = 100845248.

The previous prime is 252113131. The next prime is 252113159. The reversal of 252113140 is 41311252.

252113140 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 51437584 + 200675556 = 7172^2 + 14166^2 .

It is a super-2 number, since 2×252113140² = 127122070721319200, 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 3 ways as a sum of consecutive naturals, for example, 6302809 + ... + 6302848.

It is an arithmetic number, because the mean of its divisors is an integer number (44119803).

Almost surely, 2^252113140 is an apocalyptic number.

252113140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

252113140 is an abundant number, since it is smaller than the sum of its proper divisors (277324496).

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

252113140 is a wasteful number, since it uses less digits than its factorization.

252113140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12605666 (or 12605664 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 252113140 is about 15878.0710415340. The cubic root of 252113140 is about 631.7304737871.

Adding to 252113140 its reverse (41311252), we get a palindrome (293424392).

The spelling of 252113140 in words is "two hundred fifty-two million, one hundred thirteen thousand, one hundred forty".