423530 has 16 divisors (see below), whose sum is σ = 781704. Its totient is φ = 165120.

The previous prime is 423509. The next prime is 423541. The reversal of 423530 is 35324.

It can be written as a sum of positive squares in 4 ways, for example, as 344569 + 78961 = 587^2 + 281^2 .

It is a junction number, because it is equal to n+sod(n) for n = 423499 and 423508.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 423530.

It is an unprimeable number.

423530 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 7 ways as a sum of consecutive naturals, for example, 107 + ... + 926.

2⁴²³⁵³⁰ is an apocalyptic number.

423530 is a deficient number, since it is larger than the sum of its proper divisors (358174).

423530 is a wasteful number, since it uses less digits than its factorization.

423530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1081.

The product of its (nonzero) digits is 360, while the sum is 17.

The square root of 423530 is about 650.7918253943. The cubic root of 423530 is about 75.0979461059.

Adding to 423530 its reverse (35324), we get a palindrome (458854).

The spelling of 423530 in words is "four hundred twenty-three thousand, five hundred thirty".