140682739 has 4 divisors (see below), whose sum is σ = 141243480. Its totient is φ = 140122000.

The previous prime is 140682721. The next prime is 140682761. The reversal of 140682739 is 937286041.

140682739 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 140682739 - 2⁷ = 140682611 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140682719) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 279994 + ... + 280495.

It is an arithmetic number, because the mean of its divisors is an integer number (35310870).

Almost surely, 2^140682739 is an apocalyptic number.

140682739 is a deficient number, since it is larger than the sum of its proper divisors (560741).

140682739 is an equidigital number, since it uses as much as digits as its factorization.

140682739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560740.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 140682739 is about 11860.9754657870. The cubic root of 140682739 is about 520.0921175562.

It can be divided in two parts, 14068 and 2739, that added together give a 5-th power (16807 = 7⁵).

The spelling of 140682739 in words is "one hundred forty million, six hundred eighty-two thousand, seven hundred thirty-nine".