42042113111 has 2 divisors, whose sum is σ = 42042113112. Its totient is φ = 42042113110.

The previous prime is 42042112997. The next prime is 42042113153. The reversal of 42042113111 is 11131124024.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42042113111 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42042113161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21021056555 + 21021056556.

It is an arithmetic number, because the mean of its divisors is an integer number (21021056556).

Almost surely, 2^42042113111 is an apocalyptic number.

42042113111 is a deficient number, since it is larger than the sum of its proper divisors (1).

42042113111 is an equidigital number, since it uses as much as digits as its factorization.

42042113111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 42042113111 its reverse (11131124024), we get a palindrome (53173237135).

The spelling of 42042113111 in words is "forty-two billion, forty-two million, one hundred thirteen thousand, one hundred eleven".