259423 has 4 divisors (see below), whose sum is σ = 263880. Its totient is φ = 254968.

The previous prime is 259421. The next prime is 259429. The reversal of 259423 is 324952.

It is a happy number.

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 259423 - 2¹ = 259421 is a prime.

It is a Duffinian number.

It is a plaindrome in base 11.

It is a zygodrome in base 4.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (259421) 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, 2140 + ... + 2257.

It is an arithmetic number, because the mean of its divisors is an integer number (65970).

2²⁵⁹⁴²³ is an apocalyptic number.

259423 is a deficient number, since it is larger than the sum of its proper divisors (4457).

259423 is an equidigital number, since it uses as much as digits as its factorization.

259423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4456.

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

The square root of 259423 is about 509.3358420532. The cubic root of 259423 is about 63.7777938527. Note that the first 4 decimals are identical.

The spelling of 259423 in words is "two hundred fifty-nine thousand, four hundred twenty-three".