12842739 has 32 divisors (see below), whose sum is σ = 23421440. Its totient is φ = 6772896.

The previous prime is 12842729. The next prime is 12842771. The reversal of 12842739 is 93724821.

It is not a de Polignac number, because 12842739 - 2¹¹ = 12840691 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (12842719) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 157 + ... + 5070.

It is an arithmetic number, because the mean of its divisors is an integer number (731920).

Almost surely, 2^12842739 is an apocalyptic number.

12842739 is a deficient number, since it is larger than the sum of its proper divisors (10578701).

12842739 is a wasteful number, since it uses less digits than its factorization.

12842739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5256 (or 5250 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 12842739 is about 3583.6767432345. The cubic root of 12842739 is about 234.1814831425.

The spelling of 12842739 in words is "twelve million, eight hundred forty-two thousand, seven hundred thirty-nine".