20204043 has 4 divisors (see below), whose sum is σ = 26938728. Its totient is φ = 13469360.

The previous prime is 20204029. The next prime is 20204047. The reversal of 20204043 is 34040202.

It is a happy number.

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 20204043 - 2⁴ = 20204027 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20204047) 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, 3367338 + ... + 3367343.

It is an arithmetic number, because the mean of its divisors is an integer number (6734682).

Almost surely, 2^20204043 is an apocalyptic number.

20204043 is a deficient number, since it is larger than the sum of its proper divisors (6734685).

20204043 is an equidigital number, since it uses as much as digits as its factorization.

20204043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6734684.

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 20204043 is about 4494.8907661922. The cubic root of 20204043 is about 272.3617366650.

Adding to 20204043 its reverse (34040202), we get a palindrome (54244245).

The spelling of 20204043 in words is "twenty million, two hundred four thousand, forty-three".