2020843 has 4 divisors (see below), whose sum is σ = 2204568. Its totient is φ = 1837120.

The previous prime is 2020831. The next prime is 2020853. The reversal of 2020843 is 3480202.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2020843 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2020843.

It is not an unprimeable number, because it can be changed into a prime (2020853) 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, 91846 + ... + 91867.

It is an arithmetic number, because the mean of its divisors is an integer number (551142).

2^2020843 is an apocalyptic number.

2020843 is a deficient number, since it is larger than the sum of its proper divisors (183725).

2020843 is a wasteful number, since it uses less digits than its factorization.

2020843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183724.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 2020843 is about 1421.5635757855. The cubic root of 2020843 is about 126.4282688936.

The spelling of 2020843 in words is "two million, twenty thousand, eight hundred forty-three".