42056711 has 2 divisors, whose sum is σ = 42056712. Its totient is φ = 42056710.

The previous prime is 42056659. The next prime is 42056737. The reversal of 42056711 is 11765024.

It is an a-pointer prime, because the next prime (42056737) can be obtained adding 42056711 to its sum of digits (26).

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42056711 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42056741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21028355 + 21028356.

It is an arithmetic number, because the mean of its divisors is an integer number (21028356).

Almost surely, 2^42056711 is an apocalyptic number.

42056711 is a deficient number, since it is larger than the sum of its proper divisors (1).

42056711 is an equidigital number, since it uses as much as digits as its factorization.

42056711 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 42056711 is about 6485.1145710774. The cubic root of 42056711 is about 347.7590456699.

The spelling of 42056711 in words is "forty-two million, fifty-six thousand, seven hundred eleven".