42717811 has 2 divisors, whose sum is σ = 42717812. Its totient is φ = 42717810.

The previous prime is 42717767. The next prime is 42717823. The reversal of 42717811 is 11871724.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42717811 - 2⁷ = 42717683 is a prime.

It is a super-2 number, since 2×42717811² = 3649622753263442, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42717611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21358905 + 21358906.

It is an arithmetic number, because the mean of its divisors is an integer number (21358906).

Almost surely, 2^42717811 is an apocalyptic number.

42717811 is a deficient number, since it is larger than the sum of its proper divisors (1).

42717811 is an equidigital number, since it uses as much as digits as its factorization.

42717811 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3136, while the sum is 31.

The square root of 42717811 is about 6535.8863974215. The cubic root of 42717811 is about 349.5717510518.

The spelling of 42717811 in words is "forty-two million, seven hundred seventeen thousand, eight hundred eleven".