12442936720 has 40 divisors (see below), whose sum is σ = 28948129344. Its totient is φ = 4974026112.

The previous prime is 12442936711. The next prime is 12442936721. The reversal of 12442936720 is 2763924421.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (12442936721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80167 + ... + 176953.

Almost surely, 2^12442936720 is an apocalyptic number.

12442936720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12442936720 is an abundant number, since it is smaller than the sum of its proper divisors (16505192624).

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

12442936720 is a wasteful number, since it uses less digits than its factorization.

12442936720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98407 (or 98401 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 40.

The spelling of 12442936720 in words is "twelve billion, four hundred forty-two million, nine hundred thirty-six thousand, seven hundred twenty".