423507 has 24 divisors (see below), whose sum is σ = 682176. Its totient is φ = 232848.

The previous prime is 423503. The next prime is 423509. The reversal of 423507 is 705324.

It is a happy number.

It is not a de Polignac number, because 423507 - 2² = 423503 is a prime.

It is a super-3 number, since 3×423507³ = 227878333003514529, which contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 423507.

It is not an unprimeable number, because it can be changed into a prime (423503) 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 23 ways as a sum of consecutive naturals, for example, 6288 + ... + 6354.

It is an arithmetic number, because the mean of its divisors is an integer number (28424).

2⁴²³⁵⁰⁷ is an apocalyptic number.

423507 is a deficient number, since it is larger than the sum of its proper divisors (258669).

423507 is a wasteful number, since it uses less digits than its factorization.

423507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127 (or 120 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 21.

The square root of 423507 is about 650.7741543731. The cubic root of 423507 is about 75.0965866712.

The spelling of 423507 in words is "four hundred twenty-three thousand, five hundred seven".