20004203 has 4 divisors (see below), whose sum is σ = 20062200. Its totient is φ = 19946208.

The previous prime is 20004199. The next prime is 20004211. The reversal of 20004203 is 30240002.

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 20004203 - 2² = 20004199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20004233) 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, 28478 + ... + 29171.

It is an arithmetic number, because the mean of its divisors is an integer number (5015550).

Almost surely, 2^20004203 is an apocalyptic number.

20004203 is a deficient number, since it is larger than the sum of its proper divisors (57997).

20004203 is an equidigital number, since it uses as much as digits as its factorization.

20004203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57996.

The product of its (nonzero) digits is 48, while the sum is 11.

The square root of 20004203 is about 4472.6058399998. The cubic root of 20004203 is about 271.4607748231.

Adding to 20004203 its reverse (30240002), we get a palindrome (50244205).

The spelling of 20004203 in words is "twenty million, four thousand, two hundred three".