252140239 has 16 divisors (see below), whose sum is σ = 286221600. Its totient is φ = 220461696.

The previous prime is 252140227. The next prime is 252140249. The reversal of 252140239 is 932041252.

It is not a de Polignac number, because 252140239 - 2⁷ = 252140111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252140249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13672 + ... + 26290.

It is an arithmetic number, because the mean of its divisors is an integer number (17888850).

Almost surely, 2^252140239 is an apocalyptic number.

252140239 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

252140239 is a deficient number, since it is larger than the sum of its proper divisors (34081361).

252140239 is a wasteful number, since it uses less digits than its factorization.

252140239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12714.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 252140239 is about 15878.9243653341. The cubic root of 252140239 is about 631.7531073433.

The spelling of 252140239 in words is "two hundred fifty-two million, one hundred forty thousand, two hundred thirty-nine".