408123 has 12 divisors (see below), whose sum is σ = 595608. Its totient is φ = 269280.

The previous prime is 408091. The next prime is 408127. The reversal of 408123 is 321804.

It is a happy number.

It is not a de Polignac number, because 408123 - 2⁵ = 408091 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 408096 and 408105.

It is not an unprimeable number, because it can be changed into a prime (408127) 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 11 ways as a sum of consecutive naturals, for example, 1068 + ... + 1398.

It is an arithmetic number, because the mean of its divisors is an integer number (49634).

2⁴⁰⁸¹²³ is an apocalyptic number.

408123 is a deficient number, since it is larger than the sum of its proper divisors (187485).

408123 is a wasteful number, since it uses less digits than its factorization.

408123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474 (or 471 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 408123 is about 638.8450516362. The cubic root of 408123 is about 74.1760478532.

Adding to 408123 its reverse (321804), we get a palindrome (729927).

The spelling of 408123 in words is "four hundred eight thousand, one hundred twenty-three".