12442443340 has 24 divisors (see below), whose sum is σ = 26972007552. Its totient is φ = 4816429440.

The previous prime is 12442443323. The next prime is 12442443353. The reversal of 12442443340 is 4334424421.

It is a super-2 number, since 2×12442443340² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10033609 + ... + 10034848.

It is an arithmetic number, because the mean of its divisors is an integer number (1123833648).

Almost surely, 2^12442443340 is an apocalyptic number.

12442443340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12442443340 is an abundant number, since it is smaller than the sum of its proper divisors (14529564212).

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

12442443340 is a wasteful number, since it uses less digits than its factorization.

12442443340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20068497 (or 20068495 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 31.

Adding to 12442443340 its reverse (4334424421), we get a palindrome (16776867761).

The spelling of 12442443340 in words is "twelve billion, four hundred forty-two million, four hundred forty-three thousand, three hundred forty".