12342439994 has 16 divisors (see below), whose sum is σ = 19672474536. Its totient is φ = 5787532800.

The previous prime is 12342439981. The next prime is 12342439999. The reversal of 12342439994 is 49993424321.

It can be written as a sum of positive squares in 4 ways, for example, as 10427064769 + 1915375225 = 102113^2 + 43765^2 .

It is not an unprimeable number, because it can be changed into a prime (12342439999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 636377 + ... + 655484.

Almost surely, 2^12342439994 is an apocalyptic number.

12342439994 is a deficient number, since it is larger than the sum of its proper divisors (7330034542).

12342439994 is a wasteful number, since it uses less digits than its factorization.

12342439994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1292161.

The product of its digits is 1679616, while the sum is 50.

The spelling of 12342439994 in words is "twelve billion, three hundred forty-two million, four hundred thirty-nine thousand, nine hundred ninety-four".