42768511 has 2 divisors, whose sum is σ = 42768512. Its totient is φ = 42768510.

The previous prime is 42768491. The next prime is 42768521. The reversal of 42768511 is 11586724.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42768511 - 2²¹ = 40671359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42768521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21384255 + 21384256.

It is an arithmetic number, because the mean of its divisors is an integer number (21384256).

Almost surely, 2^42768511 is an apocalyptic number.

42768511 is a deficient number, since it is larger than the sum of its proper divisors (1).

42768511 is an equidigital number, since it uses as much as digits as its factorization.

42768511 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13440, while the sum is 34.

The square root of 42768511 is about 6539.7638336564. The cubic root of 42768511 is about 349.7099937840.

The spelling of 42768511 in words is "forty-two million, seven hundred sixty-eight thousand, five hundred eleven".