252699442 has 16 divisors (see below), whose sum is σ = 386930520. Its totient is φ = 123731712.

The previous prime is 252699379. The next prime is 252699463. The reversal of 252699442 is 244996252.

It can be written as a sum of positive squares in 4 ways, for example, as 189035001 + 63664441 = 13749^2 + 7979^2 .

It is a super-2 number, since 2×252699442² = 127714015974222728, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63034 + ... + 66922.

Almost surely, 2^252699442 is an apocalyptic number.

252699442 is a deficient number, since it is larger than the sum of its proper divisors (134231078).

252699442 is a wasteful number, since it uses less digits than its factorization.

252699442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4557.

The product of its digits is 311040, while the sum is 43.

The square root of 252699442 is about 15896.5229531492. The cubic root of 252699442 is about 632.2198018382.

The spelling of 252699442 in words is "two hundred fifty-two million, six hundred ninety-nine thousand, four hundred forty-two".