420304303 has 4 divisors (see below), whose sum is σ = 421216488. Its totient is φ = 419392120.

The previous prime is 420304223. The next prime is 420304319. The reversal of 420304303 is 303403024.

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 420304303 - 2⁹ = 420303791 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420304393) 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, 455401 + ... + 456322.

It is an arithmetic number, because the mean of its divisors is an integer number (105304122).

Almost surely, 2^420304303 is an apocalyptic number.

420304303 is a deficient number, since it is larger than the sum of its proper divisors (912185).

420304303 is an equidigital number, since it uses as much as digits as its factorization.

420304303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 912184.

The product of its (nonzero) digits is 864, while the sum is 19.

The square root of 420304303 is about 20501.3244206320. The cubic root of 420304303 is about 749.0680590537.

Adding to 420304303 its reverse (303403024), we get a palindrome (723707327).

The spelling of 420304303 in words is "four hundred twenty million, three hundred four thousand, three hundred three".