42315999 has 24 divisors (see below), whose sum is σ = 63482496. Its totient is φ = 25040400.

The previous prime is 42315997. The next prime is 42316007. The reversal of 42315999 is 99951324.

It is not a de Polignac number, because 42315999 - 2¹ = 42315997 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42315999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42315997) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14254 + ... + 16964.

It is an arithmetic number, because the mean of its divisors is an integer number (2645104).

Almost surely, 2^42315999 is an apocalyptic number.

42315999 is a deficient number, since it is larger than the sum of its proper divisors (21166497).

42315999 is a wasteful number, since it uses less digits than its factorization.

42315999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2779 (or 2768 counting only the distinct ones).

The product of its digits is 87480, while the sum is 42.

The square root of 42315999 is about 6505.0748650573. The cubic root of 42315999 is about 348.4722499169.

The spelling of 42315999 in words is "forty-two million, three hundred fifteen thousand, nine hundred ninety-nine".