12440243424 has 96 divisors (see below), whose sum is σ = 37740245760. Its totient is φ = 3514401792.

The previous prime is 12440243393. The next prime is 12440243467. The reversal of 12440243424 is 42434204421.

It is a tau number, because it is divible by the number of its divisors (96).

It is a junction number, because it is equal to n+sod(n) for n = 12440243391 and 12440243400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44194 + ... + 163809.

It is an arithmetic number, because the mean of its divisors is an integer number (393127560).

Almost surely, 2^12440243424 is an apocalyptic number.

12440243424 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

12440243424 is an abundant number, since it is smaller than the sum of its proper divisors (25300002336).

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

12440243424 is a wasteful number, since it uses less digits than its factorization.

12440243424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208112 (or 208104 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 30.

Adding to 12440243424 its reverse (42434204421), we get a palindrome (54874447845).

The spelling of 12440243424 in words is "twelve billion, four hundred forty million, two hundred forty-three thousand, four hundred twenty-four".