255140239 has 2 divisors, whose sum is σ = 255140240. Its totient is φ = 255140238.

The previous prime is 255140213. The next prime is 255140269. The reversal of 255140239 is 932041552.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 255140239 - 2⁹ = 255139727 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 255140239.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255140269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127570119 + 127570120.

It is an arithmetic number, because the mean of its divisors is an integer number (127570120).

Almost surely, 2^255140239 is an apocalyptic number.

255140239 is a deficient number, since it is larger than the sum of its proper divisors (1).

255140239 is an equidigital number, since it uses as much as digits as its factorization.

255140239 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 255140239 is about 15973.1098725326. The cubic root of 255140239 is about 634.2487977541.

The spelling of 255140239 in words is "two hundred fifty-five million, one hundred forty thousand, two hundred thirty-nine".