506123 has 4 divisors (see below), whose sum is σ = 519840. Its totient is φ = 492408.

The previous prime is 506119. The next prime is 506131. The reversal of 506123 is 321605.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 506123 - 2² = 506119 is a prime.

It is a super-2 number, since 2×506123² = 512320982258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (506113) 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, 6803 + ... + 6876.

It is an arithmetic number, because the mean of its divisors is an integer number (129960).

2⁵⁰⁶¹²³ is an apocalyptic number.

506123 is a deficient number, since it is larger than the sum of its proper divisors (13717).

506123 is a wasteful number, since it uses less digits than its factorization.

506123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13716.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 506123 is about 711.4232214371. The cubic root of 506123 is about 79.6927275566.

Adding to 506123 its reverse (321605), we get a palindrome (827728).

It can be divided in two parts, 5061 and 23, that multiplied together give a triangular number (116403 = T₄₈₂).

The spelling of 506123 in words is "five hundred six thousand, one hundred twenty-three".