12423906 has 48 divisors (see below), whose sum is σ = 31101408. Its totient is φ = 3542400.

The previous prime is 12423893. The next prime is 12423907. The reversal of 12423906 is 60932421.

It is a self number, because there is not a number n which added to its sum of digits gives 12423906.

It is not an unprimeable number, because it can be changed into a prime (12423907) 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, 1521 + ... + 5211.

It is an arithmetic number, because the mean of its divisors is an integer number (647946).

Almost surely, 2^12423906 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12423906, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15550704).

12423906 is an abundant number, since it is smaller than the sum of its proper divisors (18677502).

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

12423906 is a wasteful number, since it uses less digits than its factorization.

12423906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3727 (or 3724 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 12423906 is about 3524.7561617791. The cubic root of 12423906 is about 231.6075534240.

The spelling of 12423906 in words is "twelve million, four hundred twenty-three thousand, nine hundred six".