252131742 has 48 divisors (see below), whose sum is σ = 583390080. Its totient is φ = 78523200.

The previous prime is 252131717. The next prime is 252131753. The reversal of 252131742 is 247131252.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8392 + ... + 23972.

It is an arithmetic number, because the mean of its divisors is an integer number (12153960).

Almost surely, 2^252131742 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 252131742, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (291695040).

252131742 is an abundant number, since it is smaller than the sum of its proper divisors (331258338).

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

252131742 is a wasteful number, since it uses less digits than its factorization.

252131742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15649 (or 15646 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 252131742 is about 15878.6568071736. The cubic root of 252131742 is about 631.7460106756.

Adding to 252131742 its reverse (247131252), we get a palindrome (499262994).

The spelling of 252131742 in words is "two hundred fifty-two million, one hundred thirty-one thousand, seven hundred forty-two".