123230406 has 48 divisors (see below), whose sum is σ = 272031696. Its totient is φ = 37185408.

The previous prime is 123230339. The next prime is 123230407. The reversal of 123230406 is 604032321.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123230407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52596 + ... + 54888.

It is an arithmetic number, because the mean of its divisors is an integer number (5667327).

Almost surely, 2^123230406 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123230406, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (136015848).

123230406 is an abundant number, since it is smaller than the sum of its proper divisors (148801290).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123230406 is a wasteful number, since it uses less digits than its factorization.

123230406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2377 (or 2364 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 123230406 is about 11100.9191511334. The cubic root of 123230406 is about 497.6293188397.

Adding to 123230406 its reverse (604032321), we get a palindrome (727262727).

The spelling of 123230406 in words is "one hundred twenty-three million, two hundred thirty thousand, four hundred six".