12542442144 has 48 divisors (see below), whose sum is σ = 32945637312. Its totient is φ = 4178055168.

The previous prime is 12542442113. The next prime is 12542442169. The reversal of 12542442144 is 44124424521.

It is a tau number, because it is divible by the number of its divisors (48).

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, 105792 + ... + 190464.

It is an arithmetic number, because the mean of its divisors is an integer number (686367444).

Almost surely, 2^12542442144 is an apocalyptic number.

It is an amenable number.

12542442144 is an abundant number, since it is smaller than the sum of its proper divisors (20403195168).

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

12542442144 is a wasteful number, since it uses less digits than its factorization.

12542442144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86229 (or 86221 counting only the distinct ones).

The product of its digits is 40960, while the sum is 33.

Adding to 12542442144 its reverse (44124424521), we get a palindrome (56666866665).

The spelling of 12542442144 in words is "twelve billion, five hundred forty-two million, four hundred forty-two thousand, one hundred forty-four".