42995807 has 2 divisors, whose sum is σ = 42995808. Its totient is φ = 42995806.

The previous prime is 42995779. The next prime is 42995857. The reversal of 42995807 is 70859924.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42995807 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42995857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21497903 + 21497904.

It is an arithmetic number, because the mean of its divisors is an integer number (21497904).

Almost surely, 2^42995807 is an apocalyptic number.

42995807 is a deficient number, since it is larger than the sum of its proper divisors (1).

42995807 is an equidigital number, since it uses as much as digits as its factorization.

42995807 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 181440, while the sum is 44.

The square root of 42995807 is about 6557.1188032550. The cubic root of 42995807 is about 350.3284182669.

The spelling of 42995807 in words is "forty-two million, nine hundred ninety-five thousand, eight hundred seven".