12442044340 has 96 divisors (see below), whose sum is σ = 29098637568. Its totient is φ = 4430592000.

The previous prime is 12442044323. The next prime is 12442044347. The reversal of 12442044340 is 4344024421.

It is a junction number, because it is equal to n+sod(n) for n = 12442044299 and 12442044308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12442044347) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3232297 + ... + 3236143.

It is an arithmetic number, because the mean of its divisors is an integer number (303110808).

Almost surely, 2^12442044340 is an apocalyptic number.

12442044340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12442044340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14549318784).

12442044340 is an abundant number, since it is smaller than the sum of its proper divisors (16656593228).

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

12442044340 is a wasteful number, since it uses less digits than its factorization.

12442044340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4169 (or 4167 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 28.

Adding to 12442044340 its reverse (4344024421), we get a palindrome (16786068761).

The spelling of 12442044340 in words is "twelve billion, four hundred forty-two million, forty-four thousand, three hundred forty".