12456242 has 4 divisors (see below), whose sum is σ = 18684366. Its totient is φ = 6228120.

The previous prime is 12456221. The next prime is 12456253. The reversal of 12456242 is 24265421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24265421 = 4637 ⋅5233.

It can be written as a sum of positive squares in only one way, i.e., 12453841 + 2401 = 3529^2 + 49^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 3114059 + ... + 3114062.

Almost surely, 2^12456242 is an apocalyptic number.

12456242 is a deficient number, since it is larger than the sum of its proper divisors (6228124).

12456242 is an equidigital number, since it uses as much as digits as its factorization.

12456242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6228123.

The product of its digits is 3840, while the sum is 26.

The square root of 12456242 is about 3529.3401649600. The cubic root of 12456242 is about 231.8083162043.

The spelling of 12456242 in words is "twelve million, four hundred fifty-six thousand, two hundred forty-two".