140123239 has 2 divisors, whose sum is σ = 140123240. Its totient is φ = 140123238.

The previous prime is 140123183. The next prime is 140123251. The reversal of 140123239 is 932321041.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140123239 is a prime.

It is a super-2 number, since 2×140123239² = 39269044215702242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140123279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70061619 + 70061620.

It is an arithmetic number, because the mean of its divisors is an integer number (70061620).

Almost surely, 2^140123239 is an apocalyptic number.

140123239 is a deficient number, since it is larger than the sum of its proper divisors (1).

140123239 is an equidigital number, since it uses as much as digits as its factorization.

140123239 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 140123239 is about 11837.3662188850. The cubic root of 140123239 is about 519.4017268765.

The spelling of 140123239 in words is "one hundred forty million, one hundred twenty-three thousand, two hundred thirty-nine".