420543203 has 2 divisors, whose sum is σ = 420543204. Its totient is φ = 420543202.

The previous prime is 420543187. The next prime is 420543259. The reversal of 420543203 is 302345024.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 420543203 - 2⁴ = 420543187 is a prime.

It is not a weakly prime, because it can be changed into another prime (420543103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210271601 + 210271602.

It is an arithmetic number, because the mean of its divisors is an integer number (210271602).

Almost surely, 2^420543203 is an apocalyptic number.

420543203 is a deficient number, since it is larger than the sum of its proper divisors (1).

420543203 is an equidigital number, since it uses as much as digits as its factorization.

420543203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 23.

The square root of 420543203 is about 20507.1500457767. The cubic root of 420543203 is about 749.2099550271.

Adding to 420543203 its reverse (302345024), we get a palindrome (722888227).

The spelling of 420543203 in words is "four hundred twenty million, five hundred forty-three thousand, two hundred three".