140424979679 has 4 divisors (see below), whose sum is σ = 140430159576. Its totient is φ = 140419799784.

The previous prime is 140424979663. The next prime is 140424979693. The reversal of 140424979679 is 976979424041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 976979424041 = 118747 ⋅8227403.

It is a cyclic number.

It is not a de Polignac number, because 140424979679 - 2⁴ = 140424979663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140424979879) 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, 2549069 + ... + 2603574.

It is an arithmetic number, because the mean of its divisors is an integer number (35107539894).

Almost surely, 2^140424979679 is an apocalyptic number.

140424979679 is a deficient number, since it is larger than the sum of its proper divisors (5179897).

140424979679 is an equidigital number, since it uses as much as digits as its factorization.

140424979679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5179896.

The product of its (nonzero) digits is 27433728, while the sum is 62.

The spelling of 140424979679 in words is "one hundred forty billion, four hundred twenty-four million, nine hundred seventy-nine thousand, six hundred seventy-nine".