12432105 has 48 divisors (see below), whose sum is σ = 25069824. Its totient is φ = 5581440.

The previous prime is 12432089. The next prime is 12432107. The reversal of 12432105 is 50123421.

It is not a de Polignac number, because 12432105 - 2⁴ = 12432089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12432107) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 18892 + ... + 19538.

It is an arithmetic number, because the mean of its divisors is an integer number (522288).

Almost surely, 2^12432105 is an apocalyptic number.

12432105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12432105 is an abundant number, since it is smaller than the sum of its proper divisors (12637719).

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

12432105 is a wasteful number, since it uses less digits than its factorization.

12432105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 726 (or 723 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 12432105 is about 3525.9190291327. The cubic root of 12432105 is about 231.6584910479.

Adding to 12432105 its reverse (50123421), we get a palindrome (62555526).

The spelling of 12432105 in words is "twelve million, four hundred thirty-two thousand, one hundred five".