42522499 has 2 divisors, whose sum is σ = 42522500. Its totient is φ = 42522498.

The previous prime is 42522481. The next prime is 42522527. The reversal of 42522499 is 99422524.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42522499 is a prime.

It is not a weakly prime, because it can be changed into another prime (42522419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21261249 + 21261250.

It is an arithmetic number, because the mean of its divisors is an integer number (21261250).

Almost surely, 2^42522499 is an apocalyptic number.

42522499 is a deficient number, since it is larger than the sum of its proper divisors (1).

42522499 is an equidigital number, since it uses as much as digits as its factorization.

42522499 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51840, while the sum is 37.

The square root of 42522499 is about 6520.9277714141. The cubic root of 42522499 is about 349.0381728510.

The spelling of 42522499 in words is "forty-two million, five hundred twenty-two thousand, four hundred ninety-nine".