12442131423 has 12 divisors (see below), whose sum is σ = 17974167120. Its totient is φ = 8293739136.

The previous prime is 12442131419. The next prime is 12442131463. The reversal of 12442131423 is 32413124421.

12442131423 is a `hidden beast` number, since 1 + 24 + 4 + 213 + 1 + 423 = 666.

It is not a de Polignac number, because 12442131423 - 2² = 12442131419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12442131413) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2811 + ... + 157772.

It is an arithmetic number, because the mean of its divisors is an integer number (1497847260).

Almost surely, 2^12442131423 is an apocalyptic number.

12442131423 is a deficient number, since it is larger than the sum of its proper divisors (5532035697).

12442131423 is a wasteful number, since it uses less digits than its factorization.

12442131423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169198 (or 169195 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

Adding to 12442131423 its reverse (32413124421), we get a palindrome (44855255844).

The spelling of 12442131423 in words is "twelve billion, four hundred forty-two million, one hundred thirty-one thousand, four hundred twenty-three".