422143321 has 8 divisors (see below), whose sum is σ = 427133000. Its totient is φ = 417166848.

The previous prime is 422143313. The next prime is 422143369. The reversal of 422143321 is 123341224.

It can be written as a sum of positive squares in 4 ways, for example, as 4145296 + 417998025 = 2036^2 + 20445^2 .

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 422143321 - 2³ = 422143313 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 422143292 and 422143301.

It is not an unprimeable number, because it can be changed into a prime (422143621) 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, 70555 + ... + 76303.

It is an arithmetic number, because the mean of its divisors is an integer number (53391625).

Almost surely, 2^422143321 is an apocalyptic number.

It is an amenable number.

422143321 is a deficient number, since it is larger than the sum of its proper divisors (4989679).

422143321 is an equidigital number, since it uses as much as digits as its factorization.

422143321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6603.

The product of its digits is 1152, while the sum is 22.

The square root of 422143321 is about 20546.1266666007. The cubic root of 422143321 is about 750.1589713388.

Adding to 422143321 its reverse (123341224), we get a palindrome (545484545).

The spelling of 422143321 in words is "four hundred twenty-two million, one hundred forty-three thousand, three hundred twenty-one".