8042805 has 24 divisors (see below), whose sum is σ = 14007552. Its totient is φ = 4269024.

The previous prime is 8042779. The next prime is 8042807. The reversal of 8042805 is 5082408.

8042805 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8042805 - 2¹¹ = 8040757 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8042807) 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, 16272 + ... + 16758.

It is an arithmetic number, because the mean of its divisors is an integer number (583648).

Almost surely, 2^8042805 is an apocalyptic number.

It is an amenable number.

8042805 is a deficient number, since it is larger than the sum of its proper divisors (5964747).

8042805 is a wasteful number, since it uses less digits than its factorization.

8042805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 865 (or 862 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

The square root of 8042805 is about 2835.9839562311. The cubic root of 8042805 is about 200.3560740136.

The spelling of 8042805 in words is "eight million, forty-two thousand, eight hundred five".