423123 has 4 divisors (see below), whose sum is σ = 564168. Its totient is φ = 282080.

The previous prime is 423121. The next prime is 423127. The reversal of 423123 is 321324.

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 423123 - 2¹ = 423121 is a prime.

It is a D-number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 423123.

It is not an unprimeable number, because it can be changed into a prime (423121) 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 3 ways as a sum of consecutive naturals, for example, 70518 + ... + 70523.

It is an arithmetic number, because the mean of its divisors is an integer number (141042).

2⁴²³¹²³ is an apocalyptic number.

423123 is a deficient number, since it is larger than the sum of its proper divisors (141045).

423123 is a wasteful number, since it uses less digits than its factorization.

423123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141044.

The product of its digits is 144, while the sum is 15.

The square root of 423123 is about 650.4790542362. The cubic root of 423123 is about 75.0738827495.

Adding to 423123 its reverse (321324), we get a palindrome (744447).

The spelling of 423123 in words is "four hundred twenty-three thousand, one hundred twenty-three", and thus it is an iban number.