252434442 has 64 divisors (see below), whose sum is σ = 558472320. Its totient is φ = 75588864.

The previous prime is 252434363. The next prime is 252434521. The reversal of 252434442 is 244434252.

252434442 = 4² + 5² + ... + 911².

It is an interprime number because it is at equal distance from previous prime (252434363) and next prime (252434521).

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 938284 + ... + 938552.

It is an arithmetic number, because the mean of its divisors is an integer number (8726130).

Almost surely, 2^252434442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 252434442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (279236160).

252434442 is an abundant number, since it is smaller than the sum of its proper divisors (306037878).

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

252434442 is a wasteful number, since it uses less digits than its factorization.

252434442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 567.

The product of its digits is 30720, while the sum is 30.

The square root of 252434442 is about 15888.1856106983. The cubic root of 252434442 is about 631.9987264969.

Adding to 252434442 its reverse (244434252), we get a palindrome (496868694).

The spelling of 252434442 in words is "two hundred fifty-two million, four hundred thirty-four thousand, four hundred forty-two".