423567 has 12 divisors (see below), whose sum is σ = 644280. Its totient is φ = 267408.

The previous prime is 423559. The next prime is 423581. The reversal of 423567 is 765324.

It is a happy number.

423567 is nontrivially palindromic in base 14.

It is not a de Polignac number, because 423567 - 2³ = 423559 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 423567.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423547) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1068 + ... + 1409.

It is an arithmetic number, because the mean of its divisors is an integer number (53690).

2⁴²³⁵⁶⁷ is an apocalyptic number.

423567 is a deficient number, since it is larger than the sum of its proper divisors (220713).

423567 is a wasteful number, since it uses less digits than its factorization.

423567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2502 (or 2499 counting only the distinct ones).

The product of its digits is 5040, while the sum is 27.

The square root of 423567 is about 650.8202516824. The cubic root of 423567 is about 75.1001329192.

It can be divided in two parts, 423 and 567, that added together give a triangular number (990 = T₄₄).

The spelling of 423567 in words is "four hundred twenty-three thousand, five hundred sixty-seven".