12431842 has 4 divisors (see below), whose sum is σ = 18647766. Its totient is φ = 6215920.

The previous prime is 12431821. The next prime is 12431843. The reversal of 12431842 is 24813421.

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., 11840481 + 591361 = 3441^2 + 769^2 .

It is not an unprimeable number, because it can be changed into a prime (12431843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3107959 + ... + 3107962.

Almost surely, 2^12431842 is an apocalyptic number.

12431842 is a deficient number, since it is larger than the sum of its proper divisors (6215924).

12431842 is an equidigital number, since it uses as much as digits as its factorization.

12431842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6215923.

The product of its digits is 1536, while the sum is 25.

The square root of 12431842 is about 3525.8817336944. The cubic root of 12431842 is about 231.6568574653.

The spelling of 12431842 in words is "twelve million, four hundred thirty-one thousand, eight hundred forty-two".