424323221 has 8 divisors (see below), whose sum is σ = 493160640. Its totient is φ = 357540768.

The previous prime is 424323209. The next prime is 424323241. The reversal of 424323221 is 122323424.

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

It is a cyclic number.

It is not a de Polignac number, because 424323221 - 2¹⁴ = 424306837 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (424323241) 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 7 ways as a sum of consecutive naturals, for example, 513296 + ... + 514121.

It is an arithmetic number, because the mean of its divisors is an integer number (61645080).

Almost surely, 2^424323221 is an apocalyptic number.

It is an amenable number.

424323221 is a deficient number, since it is larger than the sum of its proper divisors (68837419).

424323221 is a wasteful number, since it uses less digits than its factorization.

424323221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1027483.

The product of its digits is 2304, while the sum is 23.

The square root of 424323221 is about 20599.1072864821. The cubic root of 424323221 is about 751.4480002243.

Adding to 424323221 its reverse (122323424), we get a palindrome (546646645).

The spelling of 424323221 in words is "four hundred twenty-four million, three hundred twenty-three thousand, two hundred twenty-one".