252421834 has 12 divisors (see below), whose sum is σ = 440450514. Its totient is φ = 108180744.

The previous prime is 252421801. The next prime is 252421837. The reversal of 252421834 is 438124252.

It can be written as a sum of positive squares in only one way, i.e., 172265625 + 80156209 = 13125^2 + 8953^2 .

It is a junction number, because it is equal to n+sod(n) for n = 252421796 and 252421805.

It is not an unprimeable number, because it can be changed into a prime (252421837) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1287769 + ... + 1287964.

Almost surely, 2^252421834 is an apocalyptic number.

252421834 is a deficient number, since it is larger than the sum of its proper divisors (188028680).

252421834 is a wasteful number, since it uses less digits than its factorization.

252421834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2575749 (or 2575742 counting only the distinct ones).

The product of its digits is 15360, while the sum is 31.

The square root of 252421834 is about 15887.7888329371. The cubic root of 252421834 is about 631.9882044613.

It can be divided in two parts, 2524218 and 34, that added together give a palindrome (2524252).

The spelling of 252421834 in words is "two hundred fifty-two million, four hundred twenty-one thousand, eight hundred thirty-four".