252464642 has 4 divisors (see below), whose sum is σ = 378696966. Its totient is φ = 126232320.

The previous prime is 252464581. The next prime is 252464659. The reversal of 252464642 is 246464252.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 184715281 + 67749361 = 13591^2 + 8231^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63116159 + ... + 63116162.

Almost surely, 2^252464642 is an apocalyptic number.

252464642 is a deficient number, since it is larger than the sum of its proper divisors (126232324).

252464642 is a wasteful number, since it uses less digits than its factorization.

252464642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126232323.

The product of its digits is 92160, while the sum is 35.

The square root of 252464642 is about 15889.1359739918. The cubic root of 252464642 is about 632.0239285524.

The spelling of 252464642 in words is "two hundred fifty-two million, four hundred sixty-four thousand, six hundred forty-two".