252542 has 4 divisors (see below), whose sum is σ = 378816. Its totient is φ = 126270.

The previous prime is 252541. The next prime is 252559. The reversal of 252542 is 245252.

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

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 252542.

It is not an unprimeable number, because it can be changed into a prime (252541) by changing a digit.

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 as a sum of consecutive naturals, namely, 63134 + ... + 63137.

It is an arithmetic number, because the mean of its divisors is an integer number (94704).

2²⁵²⁵⁴² is an apocalyptic number.

252542 is a deficient number, since it is larger than the sum of its proper divisors (126274).

252542 is a wasteful number, since it uses less digits than its factorization.

252542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126273.

The product of its digits is 800, while the sum is 20.

The square root of 252542 is about 502.5355708803. The cubic root of 252542 is about 63.2088475035.

Adding to 252542 its reverse (245252), we get a palindrome (497794).

The spelling of 252542 in words is "two hundred fifty-two thousand, five hundred forty-two".