506423 has 2 divisors, whose sum is σ = 506424. Its totient is φ = 506422.

The previous prime is 506417. The next prime is 506449. The reversal of 506423 is 324605.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 506423 - 2¹⁰ = 505399 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 506395 and 506404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (503423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 253211 + 253212.

It is an arithmetic number, because the mean of its divisors is an integer number (253212).

2⁵⁰⁶⁴²³ is an apocalyptic number.

506423 is a deficient number, since it is larger than the sum of its proper divisors (1).

506423 is an equidigital number, since it uses as much as digits as its factorization.

506423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 506423 is about 711.6340351613. The cubic root of 506423 is about 79.7084701699.

It can be divided in two parts, 506 and 423, that added together give a palindrome (929).

The spelling of 506423 in words is "five hundred six thousand, four hundred twenty-three".