204021434003 has 2 divisors, whose sum is σ = 204021434004. Its totient is φ = 204021434002.

The previous prime is 204021433927. The next prime is 204021434051. The reversal of 204021434003 is 300434120402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 204021434003 - 2¹⁴ = 204021417619 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 204021434003.

It is not a weakly prime, because it can be changed into another prime (204021434083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102010717001 + 102010717002.

It is an arithmetic number, because the mean of its divisors is an integer number (102010717002).

Almost surely, 2^204021434003 is an apocalyptic number.

204021434003 is a deficient number, since it is larger than the sum of its proper divisors (1).

204021434003 is an equidigital number, since it uses as much as digits as its factorization.

204021434003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 204021434003 its reverse (300434120402), we get a palindrome (504455554405).

The spelling of 204021434003 in words is "two hundred four billion, twenty-one million, four hundred thirty-four thousand, three".