12131240242 has 16 divisors (see below), whose sum is σ = 19854604800. Its totient is φ = 5513232240.

The previous prime is 12131240227. The next prime is 12131240257. The reversal of 12131240242 is 24204213121.

It is an interprime number because it is at equal distance from previous prime (12131240227) and next prime (12131240257).

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88384 + ... + 179092.

It is an arithmetic number, because the mean of its divisors is an integer number (1240912800).

Almost surely, 2^12131240242 is an apocalyptic number.

12131240242 is a deficient number, since it is larger than the sum of its proper divisors (7723364558).

12131240242 is a wasteful number, since it uses less digits than its factorization.

12131240242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96801.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 12131240242 its reverse (24204213121), we get a palindrome (36335453363).

The spelling of 12131240242 in words is "twelve billion, one hundred thirty-one million, two hundred forty thousand, two hundred forty-two".