42495899 has 2 divisors, whose sum is σ = 42495900. Its totient is φ = 42495898.

The previous prime is 42495857. The next prime is 42495931. The reversal of 42495899 is 99859424.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42495899 - 2²⁴ = 25718683 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (42495829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21247949 + 21247950.

It is an arithmetic number, because the mean of its divisors is an integer number (21247950).

Almost surely, 2^42495899 is an apocalyptic number.

42495899 is a deficient number, since it is larger than the sum of its proper divisors (1).

42495899 is an equidigital number, since it uses as much as digits as its factorization.

42495899 is an evil number, because the sum of its binary digits is even.

The product of its digits is 933120, while the sum is 50.

The square root of 42495899 is about 6518.8878652727. The cubic root of 42495899 is about 348.9653772546.

The spelling of 42495899 in words is "forty-two million, four hundred ninety-five thousand, eight hundred ninety-nine".