42568499 has 2 divisors, whose sum is σ = 42568500. Its totient is φ = 42568498.

The previous prime is 42568489. The next prime is 42568501. The reversal of 42568499 is 99486524.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42568499 - 2⁸ = 42568243 is a prime.

It is a super-2 number, since 2×42568499² = 3624154214226002, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 42568501, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42568429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21284249 + 21284250.

It is an arithmetic number, because the mean of its divisors is an integer number (21284250).

Almost surely, 2^42568499 is an apocalyptic number.

42568499 is a deficient number, since it is larger than the sum of its proper divisors (1).

42568499 is an equidigital number, since it uses as much as digits as its factorization.

42568499 is an evil number, because the sum of its binary digits is even.

The product of its digits is 622080, while the sum is 47.

The square root of 42568499 is about 6524.4539235096. The cubic root of 42568499 is about 349.1639883621.

The spelling of 42568499 in words is "forty-two million, five hundred sixty-eight thousand, four hundred ninety-nine".