420320203 has 4 divisors (see below), whose sum is σ = 426078088. Its totient is φ = 414562320.

The previous prime is 420320167. The next prime is 420320207. The reversal of 420320203 is 302023024.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-420320203 is a prime.

It is a super-2 number, since 2×420320203² = 353338146099922418, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420320207) 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, 2878833 + ... + 2878978.

It is an arithmetic number, because the mean of its divisors is an integer number (106519522).

Almost surely, 2^420320203 is an apocalyptic number.

420320203 is a deficient number, since it is larger than the sum of its proper divisors (5757885).

420320203 is an equidigital number, since it uses as much as digits as its factorization.

420320203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5757884.

The product of its (nonzero) digits is 288, while the sum is 16.

The square root of 420320203 is about 20501.7121967898. The cubic root of 420320203 is about 749.0775046164.

Adding to 420320203 its reverse (302023024), we get a palindrome (722343227).

The spelling of 420320203 in words is "four hundred twenty million, three hundred twenty thousand, two hundred three".