423000 has 96 divisors (see below), whose sum is σ = 1460160. Its totient is φ = 110400.

The previous prime is 422987. The next prime is 423001. The reversal of 423000 is 324.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423001) by changing a digit.

423000 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8977 + ... + 9023.

It is an arithmetic number, because the mean of its divisors is an integer number (15210).

2⁴²³⁰⁰⁰ is an apocalyptic number.

423000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 423000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (730080).

423000 is an abundant number, since it is smaller than the sum of its proper divisors (1037160).

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

423000 is a wasteful number, since it uses less digits than its factorization.

423000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74 (or 57 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 9.

The square root of 423000 is about 650.3845016604. The cubic root of 423000 is about 75.0666074950.

Adding to 423000 its reverse (324), we get a palindrome (423324).

The spelling of 423000 in words is "four hundred twenty-three thousand", and thus it is an iban number.