42495857 has 2 divisors, whose sum is σ = 42495858. Its totient is φ = 42495856.

The previous prime is 42495839. The next prime is 42495899. The reversal of 42495857 is 75859424.

It is a happy number.

42495857 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24990001 + 17505856 = 4999^2 + 4184^2 .

It is a cyclic number.

It is not a de Polignac number, because 42495857 - 2⁶ = 42495793 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42497857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21247928 + 21247929.

It is an arithmetic number, because the mean of its divisors is an integer number (21247929).

Almost surely, 2^42495857 is an apocalyptic number.

It is an amenable number.

42495857 is a deficient number, since it is larger than the sum of its proper divisors (1).

42495857 is an equidigital number, since it uses as much as digits as its factorization.

42495857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 403200, while the sum is 44.

The square root of 42495857 is about 6518.8846438635. The cubic root of 42495857 is about 348.9652622902.

The spelling of 42495857 in words is "forty-two million, four hundred ninety-five thousand, eight hundred fifty-seven".