805043 has 4 divisors (see below), whose sum is σ = 808368. Its totient is φ = 801720.

The previous prime is 805037. The next prime is 805061. The reversal of 805043 is 340508.

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

It is a cyclic number.

It is not a de Polignac number, because 805043 - 2⁴ = 805027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (805033) 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, 1268 + ... + 1793.

It is an arithmetic number, because the mean of its divisors is an integer number (202092).

2⁸⁰⁵⁰⁴³ is an apocalyptic number.

805043 is a deficient number, since it is larger than the sum of its proper divisors (3325).

805043 is a wasteful number, since it uses less digits than its factorization.

805043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3324.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 805043 is about 897.2418848895. The cubic root of 805043 is about 93.0264309968.

The spelling of 805043 in words is "eight hundred five thousand, forty-three".