111242142041 has 2 divisors, whose sum is σ = 111242142042. Its totient is φ = 111242142040.

The previous prime is 111242141957. The next prime is 111242142103. The reversal of 111242142041 is 140241242111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56394375625 + 54847766416 = 237475^2 + 234196^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111242142041 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111242141998 and 111242142016.

It is not a weakly prime, because it can be changed into another prime (111242142241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55621071020 + 55621071021.

It is an arithmetic number, because the mean of its divisors is an integer number (55621071021).

Almost surely, 2^111242142041 is an apocalyptic number.

It is an amenable number.

111242142041 is a deficient number, since it is larger than the sum of its proper divisors (1).

111242142041 is an equidigital number, since it uses as much as digits as its factorization.

111242142041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 512, while the sum is 23.

Adding to 111242142041 its reverse (140241242111), we get a palindrome (251483384152).

The spelling of 111242142041 in words is "one hundred eleven billion, two hundred forty-two million, one hundred forty-two thousand, forty-one".