12879742 has 8 divisors (see below), whose sum is σ = 19684296. Its totient is φ = 6318312.

The previous prime is 12879733. The next prime is 12879749. The reversal of 12879742 is 24797821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 12879695 and 12879704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12879749) 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 in 3 ways as a sum of consecutive naturals, for example, 60648 + ... + 60859.

It is an arithmetic number, because the mean of its divisors is an integer number (2460537).

Almost surely, 2^12879742 is an apocalyptic number.

12879742 is a deficient number, since it is larger than the sum of its proper divisors (6804554).

12879742 is a wasteful number, since it uses less digits than its factorization.

12879742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121562.

The product of its digits is 56448, while the sum is 40.

The square root of 12879742 is about 3588.8357443606. The cubic root of 12879742 is about 234.4061784181.

The spelling of 12879742 in words is "twelve million, eight hundred seventy-nine thousand, seven hundred forty-two".