424122321 has 8 divisors (see below), whose sum is σ = 646281664. Its totient is φ = 242355600.

The previous prime is 424122319. The next prime is 424122337. The reversal of 424122321 is 123221424.

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

It is not a de Polignac number, because 424122321 - 2¹ = 424122319 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: 20196301 = 424122321 / (4 + 2 + 4 + 1 + 2 + 2 + 3 + 2 + 1).

It is not an unprimeable number, because it can be changed into a prime (424122311) 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, 10098130 + ... + 10098171.

It is an arithmetic number, because the mean of its divisors is an integer number (80785208).

Almost surely, 2^424122321 is an apocalyptic number.

It is an amenable number.

424122321 is a deficient number, since it is larger than the sum of its proper divisors (222159343).

424122321 is a wasteful number, since it uses less digits than its factorization.

424122321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20196311.

The product of its digits is 768, while the sum is 21.

The square root of 424122321 is about 20594.2302842325. The cubic root of 424122321 is about 751.3293880222.

Adding to 424122321 its reverse (123221424), we get a palindrome (547343745).

It can be divided in two parts, 4241 and 22321, that added together give a palindrome (26562).

The spelling of 424122321 in words is "four hundred twenty-four million, one hundred twenty-two thousand, three hundred twenty-one".