423529 has 4 divisors (see below), whose sum is σ = 445840. Its totient is φ = 401220.

The previous prime is 423509. The next prime is 423541. The reversal of 423529 is 925324.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 423529 - 2⁵ = 423497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (423509) 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, 11127 + ... + 11164.

It is an arithmetic number, because the mean of its divisors is an integer number (111460).

2⁴²³⁵²⁹ is an apocalyptic number.

It is an amenable number.

423529 is a deficient number, since it is larger than the sum of its proper divisors (22311).

423529 is a wasteful number, since it uses less digits than its factorization.

423529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22310.

The product of its digits is 2160, while the sum is 25.

The square root of 423529 is about 650.7910570990. The cubic root of 423529 is about 75.0978870010.

The spelling of 423529 in words is "four hundred twenty-three thousand, five hundred twenty-nine".