42008099 has 4 divisors (see below), whose sum is σ = 48009264. Its totient is φ = 36006936.

The previous prime is 42008053. The next prime is 42008111. The reversal of 42008099 is 99080024.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 42008099 - 2⁸ = 42007843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42008009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3000572 + ... + 3000585.

It is an arithmetic number, because the mean of its divisors is an integer number (12002316).

Almost surely, 2^42008099 is an apocalyptic number.

42008099 is a deficient number, since it is larger than the sum of its proper divisors (6001165).

42008099 is an equidigital number, since it uses as much as digits as its factorization.

42008099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6001164.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 42008099 is about 6481.3655197034. The cubic root of 42008099 is about 347.6250061795.

The spelling of 42008099 in words is "forty-two million, eight thousand, ninety-nine".