252242979 has 16 divisors (see below), whose sum is σ = 339440640. Its totient is φ = 166610880.

The previous prime is 252242929. The next prime is 252242987. The reversal of 252242979 is 979242252.

It is not a de Polignac number, because 252242979 - 2¹⁷ = 252111907 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 252242979.

It is not an unprimeable number, because it can be changed into a prime (252242929) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 204294 + ... + 205524.

It is an arithmetic number, because the mean of its divisors is an integer number (21215040).

Almost surely, 2^252242979 is an apocalyptic number.

252242979 is a deficient number, since it is larger than the sum of its proper divisors (87197661).

252242979 is a wasteful number, since it uses less digits than its factorization.

252242979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1810.

The product of its digits is 181440, while the sum is 42.

The square root of 252242979 is about 15882.1591416281. The cubic root of 252242979 is about 631.8389028523.

It can be divided in two parts, 25224 and 2979, that added together give a triangular number (28203 = T₂₃₇).

The spelling of 252242979 in words is "two hundred fifty-two million, two hundred forty-two thousand, nine hundred seventy-nine".