422043321 has 16 divisors (see below), whose sum is σ = 656240000. Its totient is φ = 241167024.

The previous prime is 422043319. The next prime is 422043367. The reversal of 422043321 is 123340224.

It is not a de Polignac number, because 422043321 - 2¹ = 422043319 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (422043421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 204046 + ... + 206103.

It is an arithmetic number, because the mean of its divisors is an integer number (41015000).

Almost surely, 2^422043321 is an apocalyptic number.

It is an amenable number.

422043321 is a deficient number, since it is larger than the sum of its proper divisors (234196679).

422043321 is an equidigital number, since it uses as much as digits as its factorization.

422043321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410173 (or 410159 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 422043321 is about 20543.6929737572. The cubic root of 422043321 is about 750.0997325151.

Adding to 422043321 its reverse (123340224), we get a palindrome (545383545).

The spelling of 422043321 in words is "four hundred twenty-two million, forty-three thousand, three hundred twenty-one".