252740124 has 144 divisors (see below), whose sum is σ = 792529920. Its totient is φ = 66130560.

The previous prime is 252740119. The next prime is 252740143. The reversal of 252740124 is 421047252.

252740124 is a `hidden beast` number, since 252 + 7 + 401 + 2 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 586189 + ... + 586619.

It is an arithmetic number, because the mean of its divisors is an integer number (5503680).

Almost surely, 2^252740124 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 252740124, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (396264960).

252740124 is an abundant number, since it is smaller than the sum of its proper divisors (539789796).

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

252740124 is a wasteful number, since it uses less digits than its factorization.

252740124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640 (or 635 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 27.

The square root of 252740124 is about 15897.8024896525. The cubic root of 252740124 is about 632.2537269703.

Adding to 252740124 its reverse (421047252), we get a palindrome (673787376).

The spelling of 252740124 in words is "two hundred fifty-two million, seven hundred forty thousand, one hundred twenty-four".