252436842 has 48 divisors (see below), whose sum is σ = 661856832. Its totient is φ = 67881600.

The previous prime is 252436823. The next prime is 252436871. The reversal of 252436842 is 248634252.

252436842 is a `hidden beast` number, since 252 + 4 + 368 + 42 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 252436797 and 252436806.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 56784 + ... + 61067.

It is an arithmetic number, because the mean of its divisors is an integer number (13788684).

Almost surely, 2^252436842 is an apocalyptic number.

252436842 is an abundant number, since it is smaller than the sum of its proper divisors (409419990).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

252436842 is a wasteful number, since it uses less digits than its factorization.

252436842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117883 (or 117880 counting only the distinct ones).

The product of its digits is 92160, while the sum is 36.

The square root of 252436842 is about 15888.2611383373. The cubic root of 252436842 is about 632.0007293828. Note that the first 3 decimals are identical.

The spelling of 252436842 in words is "two hundred fifty-two million, four hundred thirty-six thousand, eight hundred forty-two".