252444212242 has 16 divisors (see below), whose sum is σ = 381373839000. Its totient is φ = 125320337920.

The previous prime is 252444212233. The next prime is 252444212243. The reversal of 252444212242 is 242212444252.

It can be written as a sum of positive squares in 4 ways, for example, as 189467807841 + 62976404401 = 435279^2 + 250951^2 .

It is a junction number, because it is equal to n+sod(n) for n = 252444212198 and 252444212207.

It is not an unprimeable number, because it can be changed into a prime (252444212243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 504642 + ... + 871522.

Almost surely, 2^252444212242 is an apocalyptic number.

252444212242 is a deficient number, since it is larger than the sum of its proper divisors (128929626758).

252444212242 is a wasteful number, since it uses less digits than its factorization.

252444212242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369341.

The product of its digits is 81920, while the sum is 34.

Adding to 252444212242 its reverse (242212444252), we get a palindrome (494656656494).

The spelling of 252444212242 in words is "two hundred fifty-two billion, four hundred forty-four million, two hundred twelve thousand, two hundred forty-two".