245423 has 4 divisors (see below), whose sum is σ = 258360. Its totient is φ = 232488.

The previous prime is 245419. The next prime is 245437. The reversal of 245423 is 324542.

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 245423 - 2² = 245419 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 245395 and 245404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245473) 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, 6440 + ... + 6477.

It is an arithmetic number, because the mean of its divisors is an integer number (64590).

2²⁴⁵⁴²³ is an apocalyptic number.

245423 is a deficient number, since it is larger than the sum of its proper divisors (12937).

245423 is a wasteful number, since it uses less digits than its factorization.

245423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12936.

The product of its digits is 960, while the sum is 20.

The square root of 245423 is about 495.4018570817. The cubic root of 245423 is about 62.6092382940.

Adding to 245423 its reverse (324542), we get a palindrome (569965).

The spelling of 245423 in words is "two hundred forty-five thousand, four hundred twenty-three".