42111079 has 2 divisors, whose sum is σ = 42111080. Its totient is φ = 42111078.

The previous prime is 42111077. The next prime is 42111101. The reversal of 42111079 is 97011124.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42111079 - 2¹ = 42111077 is a prime.

Together with 42111077, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42111071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21055539 + 21055540.

It is an arithmetic number, because the mean of its divisors is an integer number (21055540).

Almost surely, 2^42111079 is an apocalyptic number.

42111079 is a deficient number, since it is larger than the sum of its proper divisors (1).

42111079 is an equidigital number, since it uses as much as digits as its factorization.

42111079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 25.

The square root of 42111079 is about 6489.3049704880. The cubic root of 42111079 is about 347.9088340705.

The spelling of 42111079 in words is "forty-two million, one hundred eleven thousand, seventy-nine".