423306 has 48 divisors (see below), whose sum is σ = 1039584. Its totient is φ = 128304.

The previous prime is 423299. The next prime is 423307. The reversal of 423306 is 603324.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423307) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6285 + ... + 6351.

It is an arithmetic number, because the mean of its divisors is an integer number (21658).

2⁴²³³⁰⁶ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 423306, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (519792).

423306 is an abundant number, since it is smaller than the sum of its proper divisors (616278).

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

423306 is a wasteful number, since it uses less digits than its factorization.

423306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97 (or 85 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 423306 is about 650.6197045894. The cubic root of 423306 is about 75.0847042997.

Adding to 423306 its sum of digits (18), we get a palindrome (423324).

It can be divided in two parts, 423 and 306, that added together give a 6-th power (729 = 3⁶).

The spelling of 423306 in words is "four hundred twenty-three thousand, three hundred six".