12442666 has 8 divisors (see below), whose sum is σ = 18744804. Its totient is φ = 6194400.

The previous prime is 12442649. The next prime is 12442667. The reversal of 12442666 is 66624421.

It can be written as a sum of positive squares in 2 ways, for example, as 10400625 + 2042041 = 3225^2 + 1429^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (12442667) 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, 12885 + ... + 13816.

Almost surely, 2^12442666 is an apocalyptic number.

12442666 is a deficient number, since it is larger than the sum of its proper divisors (6302138).

12442666 is a wasteful number, since it uses less digits than its factorization.

12442666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26936.

The product of its digits is 13824, while the sum is 31.

The square root of 12442666 is about 3527.4163349398. The cubic root of 12442666 is about 231.7240699898.

The spelling of 12442666 in words is "twelve million, four hundred forty-two thousand, six hundred sixty-six".