12431442 has 16 divisors (see below), whose sum is σ = 25002432. Its totient is φ = 4120560.

The previous prime is 12431413. The next prime is 12431443. The reversal of 12431442 is 24413421.

12431442 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (12431443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4638 + ... + 6809.

It is an arithmetic number, because the mean of its divisors is an integer number (1562652).

Almost surely, 2^12431442 is an apocalyptic number.

12431442 is an abundant number, since it is smaller than the sum of its proper divisors (12570990).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12431442 is a wasteful number, since it uses less digits than its factorization.

12431442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11633.

The product of its digits is 768, while the sum is 21.

The square root of 12431442 is about 3525.8250098381. The cubic root of 12431442 is about 231.6543728848.

Adding to 12431442 its reverse (24413421), we get a palindrome (36844863).

The spelling of 12431442 in words is "twelve million, four hundred thirty-one thousand, four hundred forty-two".