42042143111 has 2 divisors, whose sum is σ = 42042143112. Its totient is φ = 42042143110.

The previous prime is 42042143089. The next prime is 42042143113. The reversal of 42042143111 is 11134124024.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42042143111 is a prime.

Together with 42042143113, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42042143113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21021071555 + 21021071556.

It is an arithmetic number, because the mean of its divisors is an integer number (21021071556).

Almost surely, 2^42042143111 is an apocalyptic number.

42042143111 is a deficient number, since it is larger than the sum of its proper divisors (1).

42042143111 is an equidigital number, since it uses as much as digits as its factorization.

42042143111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 42042143111 its reverse (11134124024), we get a palindrome (53176267135).

The spelling of 42042143111 in words is "forty-two billion, forty-two million, one hundred forty-three thousand, one hundred eleven".