12013144242 has 64 divisors (see below), whose sum is σ = 27106652160. Its totient is φ = 3516321600.

The previous prime is 12013144223. The next prime is 12013144271. The reversal of 12013144242 is 24244131021.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1146684 + ... + 1157112.

It is an arithmetic number, because the mean of its divisors is an integer number (423541440).

Almost surely, 2^12013144242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12013144242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13553326080).

12013144242 is an abundant number, since it is smaller than the sum of its proper divisors (15093507918).

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

12013144242 is a wasteful number, since it uses less digits than its factorization.

12013144242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11039.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 12013144242 its reverse (24244131021), we get a palindrome (36257275263).

The spelling of 12013144242 in words is "twelve billion, thirteen million, one hundred forty-four thousand, two hundred forty-two".