252161242 has 16 divisors (see below), whose sum is σ = 381595392. Its totient is φ = 124966800.

The previous prime is 252161237. The next prime is 252161249. The reversal of 252161242 is 242161252.

It is not an unprimeable number, because it can be changed into a prime (252161249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 228063 + ... + 229165.

It is an arithmetic number, because the mean of its divisors is an integer number (23849712).

Almost surely, 2^252161242 is an apocalyptic number.

252161242 is a deficient number, since it is larger than the sum of its proper divisors (129434150).

252161242 is a wasteful number, since it uses less digits than its factorization.

252161242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2013.

The product of its digits is 1920, while the sum is 25.

The square root of 252161242 is about 15879.5856998852. The cubic root of 252161242 is about 631.7706482988.

The spelling of 252161242 in words is "two hundred fifty-two million, one hundred sixty-one thousand, two hundred forty-two".