12312442 has 4 divisors (see below), whose sum is σ = 18468666. Its totient is φ = 6156220.

The previous prime is 12312439. The next prime is 12312457. The reversal of 12312442 is 24421321.

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

It can be written as a sum of positive squares in only one way, i.e., 9357481 + 2954961 = 3059^2 + 1719^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3078109 + ... + 3078112.

Almost surely, 2^12312442 is an apocalyptic number.

12312442 is a deficient number, since it is larger than the sum of its proper divisors (6156224).

12312442 is an equidigital number, since it uses as much as digits as its factorization.

12312442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6156223.

The product of its digits is 384, while the sum is 19.

The square root of 12312442 is about 3508.9089472370. The cubic root of 12312442 is about 230.9128310624.

Adding to 12312442 its reverse (24421321), we get a palindrome (36733763).

The spelling of 12312442 in words is "twelve million, three hundred twelve thousand, four hundred forty-two".