42695287 has 2 divisors, whose sum is σ = 42695288. Its totient is φ = 42695286.

The previous prime is 42695273. The next prime is 42695297. The reversal of 42695287 is 78259624.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42695287 - 2¹⁵ = 42662519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42695207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21347643 + 21347644.

It is an arithmetic number, because the mean of its divisors is an integer number (21347644).

Almost surely, 2^42695287 is an apocalyptic number.

42695287 is a deficient number, since it is larger than the sum of its proper divisors (1).

42695287 is an equidigital number, since it uses as much as digits as its factorization.

42695287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 241920, while the sum is 43.

The square root of 42695287 is about 6534.1630680601. The cubic root of 42695287 is about 349.5103001938.

The spelling of 42695287 in words is "forty-two million, six hundred ninety-five thousand, two hundred eighty-seven".