12426709 has 4 divisors (see below), whose sum is σ = 12762604. Its totient is φ = 12090816.

The previous prime is 12426679. The next prime is 12426727. The reversal of 12426709 is 90762421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 90762421 = 67 ⋅1354663.

It can be written as a sum of positive squares in 2 ways, for example, as 5152900 + 7273809 = 2270^2 + 2697^2 .

It is a cyclic number.

It is not a de Polignac number, because 12426709 - 2⁷ = 12426581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12426769) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 167892 + ... + 167965.

It is an arithmetic number, because the mean of its divisors is an integer number (3190651).

Almost surely, 2^12426709 is an apocalyptic number.

It is an amenable number.

12426709 is a deficient number, since it is larger than the sum of its proper divisors (335895).

12426709 is an equidigital number, since it uses as much as digits as its factorization.

12426709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335894.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 12426709 is about 3525.1537555119. The cubic root of 12426709 is about 231.6249700388.

The spelling of 12426709 in words is "twelve million, four hundred twenty-six thousand, seven hundred nine".