12422945 has 4 divisors (see below), whose sum is σ = 14907540. Its totient is φ = 9938352.

The previous prime is 12422929. The next prime is 12422951. The reversal of 12422945 is 54922421.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8133904 + 4289041 = 2852^2 + 2071^2 .

It is a cyclic number.

It is not a de Polignac number, because 12422945 - 2⁴ = 12422929 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1242290 + ... + 1242299.

It is an arithmetic number, because the mean of its divisors is an integer number (3726885).

Almost surely, 2^12422945 is an apocalyptic number.

It is an amenable number.

12422945 is a deficient number, since it is larger than the sum of its proper divisors (2484595).

12422945 is an equidigital number, since it uses as much as digits as its factorization.

12422945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2484594.

The product of its digits is 5760, while the sum is 29.

The square root of 12422945 is about 3524.6198376563. The cubic root of 12422945 is about 231.6015815877.

The spelling of 12422945 in words is "twelve million, four hundred twenty-two thousand, nine hundred forty-five".