423544 has 16 divisors (see below), whose sum is σ = 866520. Its totient is φ = 192480.

The previous prime is 423541. The next prime is 423547. The reversal of 423544 is 445324.

It is a happy number.

423544 is an esthetic number in base 16, because in such base its adjacent digits differ by 1.

It is an interprime number because it is at equal distance from previous prime (423541) and next prime (423547).

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423541) 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 3 ways as a sum of consecutive naturals, for example, 2319 + ... + 2494.

2⁴²³⁵⁴⁴ is an apocalyptic number.

423544 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

423544 is an abundant number, since it is smaller than the sum of its proper divisors (442976).

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

423544 is a wasteful number, since it uses less digits than its factorization.

423544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4830 (or 4826 counting only the distinct ones).

The product of its digits is 1920, while the sum is 22.

The square root of 423544 is about 650.8025814331. The cubic root of 423544 is about 75.0987735637.

Adding to 423544 its reverse (445324), we get a palindrome (868868).

The spelling of 423544 in words is "four hundred twenty-three thousand, five hundred forty-four".