140239907 has 2 divisors, whose sum is σ = 140239908. Its totient is φ = 140239906.

The previous prime is 140239859. The next prime is 140239933. The reversal of 140239907 is 709932041.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 140239907 - 2⁸ = 140239651 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (140239937) 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, 70119953 + 70119954.

It is an arithmetic number, because the mean of its divisors is an integer number (70119954).

Almost surely, 2^140239907 is an apocalyptic number.

140239907 is a deficient number, since it is larger than the sum of its proper divisors (1).

140239907 is an equidigital number, since it uses as much as digits as its factorization.

140239907 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 140239907 is about 11842.2931478663. The cubic root of 140239907 is about 519.5458398988.

The spelling of 140239907 in words is "one hundred forty million, two hundred thirty-nine thousand, nine hundred seven".