252400039 has 2 divisors, whose sum is σ = 252400040. Its totient is φ = 252400038.

The previous prime is 252400019. The next prime is 252400061. The reversal of 252400039 is 930004252.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 252400039 - 2⁷ = 252399911 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 252399986 and 252400022.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (252400019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126200019 + 126200020.

It is an arithmetic number, because the mean of its divisors is an integer number (126200020).

Almost surely, 2^252400039 is an apocalyptic number.

252400039 is a deficient number, since it is larger than the sum of its proper divisors (1).

252400039 is an equidigital number, since it uses as much as digits as its factorization.

252400039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 252400039 is about 15887.1029139991. The cubic root of 252400039 is about 631.9700145670.

The spelling of 252400039 in words is "two hundred fifty-two million, four hundred thousand, thirty-nine".