252242442 has 96 divisors (see below), whose sum is σ = 595408320. Its totient is φ = 76930560.

The previous prime is 252242437. The next prime is 252242483. The reversal of 252242442 is 244242252.

It is a super-2 number, since 2×252242442² = 127252499092246728, which contains 22 as substring.

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, 2232178 + ... + 2232290.

It is an arithmetic number, because the mean of its divisors is an integer number (6202170).

Almost surely, 2^252242442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 252242442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (297704160).

252242442 is an abundant number, since it is smaller than the sum of its proper divisors (343165878).

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

252242442 is a wasteful number, since it uses less digits than its factorization.

252242442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308 (or 305 counting only the distinct ones).

The product of its digits is 10240, while the sum is 27.

The square root of 252242442 is about 15882.1422358572. The cubic root of 252242442 is about 631.8384544781.

Adding to 252242442 its reverse (244242252), we get a palindrome (496484694).

The spelling of 252242442 in words is "two hundred fifty-two million, two hundred forty-two thousand, four hundred forty-two".