423843 has 8 divisors (see below), whose sum is σ = 645888. Its totient is φ = 242184.

The previous prime is 423823. The next prime is 423847. The reversal of 423843 is 348324.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 423843 - 2⁶ = 423779 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (423847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10071 + ... + 10112.

It is an arithmetic number, because the mean of its divisors is an integer number (80736).

2⁴²³⁸⁴³ is an apocalyptic number.

423843 is a deficient number, since it is larger than the sum of its proper divisors (222045).

423843 is a wasteful number, since it uses less digits than its factorization.

423843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20193.

The product of its digits is 2304, while the sum is 24.

The square root of 423843 is about 651.0322572653. The cubic root of 423843 is about 75.1164413475.

The spelling of 423843 in words is "four hundred twenty-three thousand, eight hundred forty-three".