423873 has 10 divisors (see below), whose sum is σ = 633314. Its totient is φ = 282528.

The previous prime is 423869. The next prime is 423883. The reversal of 423873 is 378324.

It can be written as a sum of positive squares in only one way, i.e., 419904 + 3969 = 648^2 + 63^2 .

It is not a de Polignac number, because 423873 - 2² = 423869 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (423803) 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 9 ways as a sum of consecutive naturals, for example, 2536 + ... + 2697.

2⁴²³⁸⁷³ is an apocalyptic number.

It is an amenable number.

423873 is a deficient number, since it is larger than the sum of its proper divisors (209441).

423873 is an equidigital number, since it uses as much as digits as its factorization.

423873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5245 (or 5236 counting only the distinct ones).

The product of its digits is 4032, while the sum is 27.

The square root of 423873 is about 651.0552971906. The cubic root of 423873 is about 75.1182135761.

It can be divided in two parts, 423 and 873, that added together give a 4-th power (1296 = 6⁴).

The spelling of 423873 in words is "four hundred twenty-three thousand, eight hundred seventy-three".