12944929842 has 96 divisors (see below), whose sum is σ = 32155061760. Its totient is φ = 3854485440.

The previous prime is 12944929819. The next prime is 12944929847. The reversal of 12944929842 is 24892944921.

It is a happy number.

12944929842 is a `hidden beast` number, since 1 + 29 + 4 + 492 + 98 + 42 = 666.

It is a super-2 number, since 2×12944929842² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (12944929847) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 260028 + ... + 305784.

It is an arithmetic number, because the mean of its divisors is an integer number (334948560).

Almost surely, 2^12944929842 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12944929842, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16077530880).

12944929842 is an abundant number, since it is smaller than the sum of its proper divisors (19210131918).

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

12944929842 is a wasteful number, since it uses less digits than its factorization.

12944929842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45825 (or 45806 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 54.

The spelling of 12944929842 in words is "twelve billion, nine hundred forty-four million, nine hundred twenty-nine thousand, eight hundred forty-two".