423198 has 32 divisors (see below), whose sum is σ = 997920. Its totient is φ = 132480.

The previous prime is 423191. The next prime is 423209. The reversal of 423198 is 891324.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 688 + ... + 1148.

It is an arithmetic number, because the mean of its divisors is an integer number (31185).

2⁴²³¹⁹⁸ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 423198, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (498960).

423198 is an abundant number, since it is smaller than the sum of its proper divisors (574722).

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

423198 is a wasteful number, since it uses less digits than its factorization.

423198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489 (or 483 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 423198 is about 650.5367015012. The cubic root of 423198 is about 75.0783181884.

It can be divided in two parts, 42 and 3198, that added together give a triangular number (3240 = T₈₀).

The spelling of 423198 in words is "four hundred twenty-three thousand, one hundred ninety-eight".