12442624420 has 12 divisors (see below), whose sum is σ = 26129511324. Its totient is φ = 4977049760.

The previous prime is 12442624393. The next prime is 12442624421. The reversal of 12442624420 is 2442624421.

It can be written as a sum of positive squares in 2 ways, for example, as 9704614144 + 2738010276 = 98512^2 + 52326^2 .

It is not an unprimeable number, because it can be changed into a prime (12442624421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 311065591 + ... + 311065630.

It is an arithmetic number, because the mean of its divisors is an integer number (2177459277).

Almost surely, 2^12442624420 is an apocalyptic number.

12442624420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12442624420 is an abundant number, since it is smaller than the sum of its proper divisors (13686886904).

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

12442624420 is a wasteful number, since it uses less digits than its factorization.

12442624420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622131230 (or 622131228 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 31.

Subtracting from 12442624420 its reverse (2442624421), we obtain a palindrome (9999999999).

The spelling of 12442624420 in words is "twelve billion, four hundred forty-two million, six hundred twenty-four thousand, four hundred twenty".