252421258 has 8 divisors (see below), whose sum is σ = 379925028. Its totient is φ = 125779584.

The previous prime is 252421217. The next prime is 252421271. The reversal of 252421258 is 852124252.

It can be written as a sum of positive squares in 2 ways, for example, as 215003569 + 37417689 = 14663^2 + 6117^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 214791 + ... + 215962.

Almost surely, 2^252421258 is an apocalyptic number.

252421258 is a deficient number, since it is larger than the sum of its proper divisors (127503770).

252421258 is a wasteful number, since it uses less digits than its factorization.

252421258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431048.

The product of its digits is 12800, while the sum is 31.

The square root of 252421258 is about 15887.7707057976. The cubic root of 252421258 is about 631.9877237508.

The spelling of 252421258 in words is "two hundred fifty-two million, four hundred twenty-one thousand, two hundred fifty-eight".