140245739 has 2 divisors, whose sum is σ = 140245740. Its totient is φ = 140245738.

The previous prime is 140245723. The next prime is 140245753. The reversal of 140245739 is 937542041.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 140245739 - 2⁴ = 140245723 is a prime.

It is a super-2 number, since 2×140245739² = 39337734615312242, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 140245699 and 140245708.

It is not a weakly prime, because it can be changed into another prime (140245709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70122869 + 70122870.

It is an arithmetic number, because the mean of its divisors is an integer number (70122870).

Almost surely, 2^140245739 is an apocalyptic number.

140245739 is a deficient number, since it is larger than the sum of its proper divisors (1).

140245739 is an equidigital number, since it uses as much as digits as its factorization.

140245739 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 140245739 is about 11842.5393813996. The cubic root of 140245739 is about 519.5530417227.

The spelling of 140245739 in words is "one hundred forty million, two hundred forty-five thousand, seven hundred thirty-nine".