20202043 has 4 divisors (see below), whose sum is σ = 20230120. Its totient is φ = 20173968.

The previous prime is 20202031. The next prime is 20202071. The reversal of 20202043 is 34020202.

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 20202043 - 2⁵ = 20202011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20202943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12930 + ... + 14407.

It is an arithmetic number, because the mean of its divisors is an integer number (5057530).

Almost surely, 2^20202043 is an apocalyptic number.

20202043 is a deficient number, since it is larger than the sum of its proper divisors (28077).

20202043 is an equidigital number, since it uses as much as digits as its factorization.

20202043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28076.

The product of its (nonzero) digits is 96, while the sum is 13.

The square root of 20202043 is about 4494.6682858694. The cubic root of 20202043 is about 272.3527493310.

Adding to 20202043 its reverse (34020202), we get a palindrome (54222245).

The spelling of 20202043 in words is "twenty million, two hundred two thousand, forty-three".