421332303 has 8 divisors (see below), whose sum is σ = 642030208. Its totient is φ = 240761304.

The previous prime is 421332293. The next prime is 421332311. The reversal of 421332303 is 303233124.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 421332303 - 2¹⁰ = 421331279 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 20063443 = 421332303 / (4 + 2 + 1 + 3 + 3 + 2 + 3 + 0 + 3).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 421332303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421332313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10031701 + ... + 10031742.

It is an arithmetic number, because the mean of its divisors is an integer number (80253776).

Almost surely, 2^421332303 is an apocalyptic number.

421332303 is a deficient number, since it is larger than the sum of its proper divisors (220697905).

421332303 is a wasteful number, since it uses less digits than its factorization.

421332303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20063453.

The product of its (nonzero) digits is 1296, while the sum is 21.

The square root of 421332303 is about 20526.3806600190. The cubic root of 421332303 is about 749.6782637786.

Adding to 421332303 its reverse (303233124), we get a palindrome (724565427).

The spelling of 421332303 in words is "four hundred twenty-one million, three hundred thirty-two thousand, three hundred three".