252186942 has 32 divisors (see below), whose sum is σ = 610336512. Its totient is φ = 67814784.

The previous prime is 252186923. The next prime is 252186947. The reversal of 252186942 is 249681252.

It is a super-2 number, since 2×252186942² = 127196507430622728, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 252186942.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252186947) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 175888 + ... + 177315.

It is an arithmetic number, because the mean of its divisors is an integer number (19073016).

Almost surely, 2^252186942 is an apocalyptic number.

252186942 is an abundant number, since it is smaller than the sum of its proper divisors (358149570).

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

252186942 is a wasteful number, since it uses less digits than its factorization.

252186942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353232.

The product of its digits is 69120, while the sum is 39.

The square root of 252186942 is about 15880.3948943343. The cubic root of 252186942 is about 631.7921106958.

The spelling of 252186942 in words is "two hundred fifty-two million, one hundred eighty-six thousand, nine hundred forty-two".