140343239 has 2 divisors, whose sum is σ = 140343240. Its totient is φ = 140343238.

The previous prime is 140343227. The next prime is 140343323. The reversal of 140343239 is 932343041.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 140343239 - 2²⁰ = 139294663 is a prime.

It is a super-2 number, since 2×140343239² = 39392449466022242, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140348239) 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 as a sum of consecutive naturals, namely, 70171619 + 70171620.

It is an arithmetic number, because the mean of its divisors is an integer number (70171620).

Almost surely, 2^140343239 is an apocalyptic number.

140343239 is a deficient number, since it is larger than the sum of its proper divisors (1).

140343239 is an equidigital number, since it uses as much as digits as its factorization.

140343239 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 29.

The square root of 140343239 is about 11846.6551819490. The cubic root of 140343239 is about 519.6734130260.

The spelling of 140343239 in words is "one hundred forty million, three hundred forty-three thousand, two hundred thirty-nine".