12142443243 has 16 divisors (see below), whose sum is σ = 18933069056. Its totient is φ = 6777177120.

The previous prime is 12142443241. The next prime is 12142443253. The reversal of 12142443243 is 34234424121.

It is not a de Polignac number, because 12142443243 - 2¹ = 12142443241 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12142443243.

It is not an unprimeable number, because it can be changed into a prime (12142443241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6722488 + ... + 6724293.

It is an arithmetic number, because the mean of its divisors is an integer number (1183316816).

Almost surely, 2^12142443243 is an apocalyptic number.

12142443243 is a deficient number, since it is larger than the sum of its proper divisors (6790625813).

12142443243 is a wasteful number, since it uses less digits than its factorization.

12142443243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13446834.

The product of its digits is 18432, while the sum is 30.

Adding to 12142443243 its reverse (34234424121), we get a palindrome (46376867364).

The spelling of 12142443243 in words is "twelve billion, one hundred forty-two million, four hundred forty-three thousand, two hundred forty-three".