12131142043242 has 64 divisors (see below), whose sum is σ = 25001718215040. Its totient is φ = 3922227538944.

The previous prime is 12131142043219. The next prime is 12131142043253. The reversal of 12131142043242 is 24234024113121.

It is a happy number.

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, 203093593 + ... + 203153315.

It is an arithmetic number, because the mean of its divisors is an integer number (390651847110).

Almost surely, 2^{12131142043242} is an apocalyptic number.

12131142043242 is an abundant number, since it is smaller than the sum of its proper divisors (12870576171798).

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

12131142043242 is a wasteful number, since it uses less digits than its factorization.

12131142043242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67047.

The product of its (nonzero) digits is 9216, while the sum is 30.

Adding to 12131142043242 its reverse (24234024113121), we get a palindrome (36365166156363).

The spelling of 12131142043242 in words is "twelve trillion, one hundred thirty-one billion, one hundred forty-two million, forty-three thousand, two hundred forty-two".