420603203 has 4 divisors (see below), whose sum is σ = 421115088. Its totient is φ = 420091320.

The previous prime is 420603191. The next prime is 420603217. The reversal of 420603203 is 302306024.

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 420603203 - 2⁴ = 420603187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420603223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 254708 + ... + 256353.

It is an arithmetic number, because the mean of its divisors is an integer number (105278772).

Almost surely, 2^420603203 is an apocalyptic number.

420603203 is a deficient number, since it is larger than the sum of its proper divisors (511885).

420603203 is an equidigital number, since it uses as much as digits as its factorization.

420603203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511884.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 420603203 is about 20508.6128979997. The cubic root of 420603203 is about 749.2455839148.

Adding to 420603203 its reverse (302306024), we get a palindrome (722909227).

The spelling of 420603203 in words is "four hundred twenty million, six hundred three thousand, two hundred three".