140068739 has 2 divisors, whose sum is σ = 140068740. Its totient is φ = 140068738.

The previous prime is 140068723. The next prime is 140068769. The reversal of 140068739 is 937860041.

It is a weak prime.

It is an emirp because it is prime and its reverse (937860041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 140068739 - 2⁴ = 140068723 is a prime.

It is not a weakly prime, because it can be changed into another prime (140068769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70034369 + 70034370.

It is an arithmetic number, because the mean of its divisors is an integer number (70034370).

Almost surely, 2^140068739 is an apocalyptic number.

140068739 is a deficient number, since it is larger than the sum of its proper divisors (1).

140068739 is an equidigital number, since it uses as much as digits as its factorization.

140068739 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 140068739 is about 11835.0639626493. The cubic root of 140068739 is about 519.3343788641.

The spelling of 140068739 in words is "one hundred forty million, sixty-eight thousand, seven hundred thirty-nine".