423450 has 36 divisors (see below), whose sum is σ = 1138878. Its totient is φ = 112800.

The previous prime is 423439. The next prime is 423457. The reversal of 423450 is 54324.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 335241 + 88209 = 579^2 + 297^2 .

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

It is not an unprimeable number, because it can be changed into a prime (423457) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 21 + ... + 920.

2⁴²³⁴⁵⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 423450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (569439).

423450 is an abundant number, since it is smaller than the sum of its proper divisors (715428).

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

423450 is a wasteful number, since it uses less digits than its factorization.

423450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 959 (or 951 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 423450 is about 650.7303589045. The cubic root of 423450 is about 75.0932174255.

Adding to 423450 its reverse (54324), we get a palindrome (477774).

The spelling of 423450 in words is "four hundred twenty-three thousand, four hundred fifty".