12424421432 has 8 divisors (see below), whose sum is σ = 23295790200. Its totient is φ = 6212210712.

The previous prime is 12424421431. The next prime is 12424421441. The reversal of 12424421432 is 23412442421.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 12424421395 and 12424421404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12424421431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 776526332 + ... + 776526347.

It is an arithmetic number, because the mean of its divisors is an integer number (2911973775).

Almost surely, 2^12424421432 is an apocalyptic number.

It is an amenable number.

12424421432 is a deficient number, since it is larger than the sum of its proper divisors (10871368768).

12424421432 is a wasteful number, since it uses less digits than its factorization.

12424421432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1553052685 (or 1553052681 counting only the distinct ones).

The product of its digits is 12288, while the sum is 29.

Adding to 12424421432 its reverse (23412442421), we get a palindrome (35836863853).

The spelling of 12424421432 in words is "twelve billion, four hundred twenty-four million, four hundred twenty-one thousand, four hundred thirty-two".