12742839946 has 16 divisors (see below), whose sum is σ = 19811372040. Its totient is φ = 6139893760.

The previous prime is 12742839929. The next prime is 12742840003. The reversal of 12742839946 is 64993824721.

12742839946 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 11908265625 + 834574321 = 109125^2 + 28889^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 180631 + ... + 241066.

Almost surely, 2^12742839946 is an apocalyptic number.

12742839946 is a deficient number, since it is larger than the sum of its proper divisors (7068532094).

12742839946 is a wasteful number, since it uses less digits than its factorization.

12742839946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422249.

The product of its digits is 5225472, while the sum is 55.

The spelling of 12742839946 in words is "twelve billion, seven hundred forty-two million, eight hundred thirty-nine thousand, nine hundred forty-six".