423506 has 8 divisors (see below), whose sum is σ = 641520. Its totient is φ = 209668.

The previous prime is 423503. The next prime is 423509. The reversal of 423506 is 605324.

It is an interprime number because it is at equal distance from previous prime (423503) and next prime (423509).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (423503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 776 + ... + 1203.

It is an arithmetic number, because the mean of its divisors is an integer number (80190).

2⁴²³⁵⁰⁶ is an apocalyptic number.

423506 is a deficient number, since it is larger than the sum of its proper divisors (218014).

423506 is a wasteful number, since it uses less digits than its factorization.

423506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2088.

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

The square root of 423506 is about 650.7733860569. The cubic root of 423506 is about 75.0965275643.

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

The spelling of 423506 in words is "four hundred twenty-three thousand, five hundred six".