12103432 has 32 divisors (see below), whose sum is σ = 25084800. Its totient is φ = 5428800.

The previous prime is 12103417. The next prime is 12103433. The reversal of 12103432 is 23430121.

It is a happy number.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (12103433) 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 7 ways as a sum of consecutive naturals, for example, 6082 + ... + 7822.

It is an arithmetic number, because the mean of its divisors is an integer number (783900).

Almost surely, 2^12103432 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12103432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12542400).

12103432 is an abundant number, since it is smaller than the sum of its proper divisors (12981368).

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

12103432 is a wasteful number, since it uses less digits than its factorization.

12103432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1837 (or 1833 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 12103432 is about 3478.9987065246. The cubic root of 12103432 is about 229.5987458806.

Adding to 12103432 its reverse (23430121), we get a palindrome (35533553).

The spelling of 12103432 in words is "twelve million, one hundred three thousand, four hundred thirty-two".