42817899 has 16 divisors (see below), whose sum is σ = 59318784. Its totient is φ = 27451200.

The previous prime is 42817897. The next prime is 42817909. The reversal of 42817899 is 99871824.

It is not a de Polignac number, because 42817899 - 2¹ = 42817897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42817897) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6282 + ... + 11184.

It is an arithmetic number, because the mean of its divisors is an integer number (3707424).

Almost surely, 2^42817899 is an apocalyptic number.

42817899 is a deficient number, since it is larger than the sum of its proper divisors (16500885).

42817899 is a wasteful number, since it uses less digits than its factorization.

42817899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5018.

The product of its digits is 290304, while the sum is 48.

The square root of 42817899 is about 6543.5387215176. The cubic root of 42817899 is about 349.8445541011.

The spelling of 42817899 in words is "forty-two million, eight hundred seventeen thousand, eight hundred ninety-nine".