12722423 has 16 divisors (see below), whose sum is σ = 15081024. Its totient is φ = 10506240.

The previous prime is 12722417. The next prime is 12722447. The reversal of 12722423 is 32422721.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12722423 - 2⁸ = 12722167 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12722123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27611 + ... + 28067.

It is an arithmetic number, because the mean of its divisors is an integer number (942564).

Almost surely, 2^12722423 is an apocalyptic number.

12722423 is a deficient number, since it is larger than the sum of its proper divisors (2358601).

12722423 is an equidigital number, since it uses as much as digits as its factorization.

12722423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 602.

The product of its digits is 1344, while the sum is 23.

The square root of 12722423 is about 3566.8505715827. The cubic root of 12722423 is about 233.4478850231.

The spelling of 12722423 in words is "twelve million, seven hundred twenty-two thousand, four hundred twenty-three".