12742649439 has 16 divisors (see below), whose sum is σ = 18307021824. Its totient is φ = 7837394400.

The previous prime is 12742649419. The next prime is 12742649453. The reversal of 12742649439 is 93494624721.

It is a happy number.

It is not a de Polignac number, because 12742649439 - 2¹² = 12742645343 is a prime.

It is a super-2 number, since 2×12742649439² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12742649391 and 12742649400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12742649419) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14347 + ... + 160284.

It is an arithmetic number, because the mean of its divisors is an integer number (1144188864).

Almost surely, 2^12742649439 is an apocalyptic number.

12742649439 is a deficient number, since it is larger than the sum of its proper divisors (5564372385).

12742649439 is a wasteful number, since it uses less digits than its factorization.

12742649439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176518.

The product of its digits is 2612736, while the sum is 51.

The spelling of 12742649439 in words is "twelve billion, seven hundred forty-two million, six hundred forty-nine thousand, four hundred thirty-nine".