504423 has 12 divisors (see below), whose sum is σ = 746928. Its totient is φ = 327840.

The previous prime is 504403. The next prime is 504457. The reversal of 504423 is 324405.

Added to its reverse (324405) it gives a triangular number (828828 = T₁₂₈₇).

It is a happy number.

It is not a de Polignac number, because 504423 - 2⁶ = 504359 is a prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 504396 and 504405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (504403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 315 + ... + 1052.

It is an arithmetic number, because the mean of its divisors is an integer number (62244).

2⁵⁰⁴⁴²³ is an apocalyptic number.

504423 is a deficient number, since it is larger than the sum of its proper divisors (242505).

504423 is a wasteful number, since it uses less digits than its factorization.

504423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1414 (or 1411 counting only the distinct ones).

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

The square root of 504423 is about 710.2274283636. The cubic root of 504423 is about 79.6034017047.

Subtracting from 504423 its sum of digits (18), we obtain a palindrome (504405).

Adding to 504423 its reverse (324405), we get a palindrome (828828).

The spelling of 504423 in words is "five hundred four thousand, four hundred twenty-three".