423243222 has 32 divisors (see below), whose sum is σ = 870914400. Its totient is φ = 137023488.

The previous prime is 423243181. The next prime is 423243229. The reversal of 423243222 is 222342324.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 423243192 and 423243201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423243229) 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, 156054 + ... + 158742.

It is an arithmetic number, because the mean of its divisors is an integer number (27216075).

Almost surely, 2^423243222 is an apocalyptic number.

423243222 is an abundant number, since it is smaller than the sum of its proper divisors (447671178).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

423243222 is a wasteful number, since it uses less digits than its factorization.

423243222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3440.

The product of its digits is 4608, while the sum is 24.

The square root of 423243222 is about 20572.8758806347. The cubic root of 423243222 is about 750.8099232731.

Adding to 423243222 its reverse (222342324), we get a palindrome (645585546).

The spelling of 423243222 in words is "four hundred twenty-three million, two hundred forty-three thousand, two hundred twenty-two".