42653599 has 2 divisors, whose sum is σ = 42653600. Its totient is φ = 42653598.

The previous prime is 42653593. The next prime is 42653609. The reversal of 42653599 is 99535624.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42653599 - 2⁹ = 42653087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42653593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21326799 + 21326800.

It is an arithmetic number, because the mean of its divisors is an integer number (21326800).

Almost surely, 2^42653599 is an apocalyptic number.

42653599 is a deficient number, since it is larger than the sum of its proper divisors (1).

42653599 is an equidigital number, since it uses as much as digits as its factorization.

42653599 is an evil number, because the sum of its binary digits is even.

The product of its digits is 291600, while the sum is 43.

The square root of 42653599 is about 6530.9722859617. The cubic root of 42653599 is about 349.3965083197.

The spelling of 42653599 in words is "forty-two million, six hundred fifty-three thousand, five hundred ninety-nine".