12542432 has 72 divisors (see below), whose sum is σ = 30308040. Its totient is φ = 5080320.

The previous prime is 12542423. The next prime is 12542437. The reversal of 12542432 is 23424521.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12542398 and 12542407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12542437) 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 11 ways as a sum of consecutive naturals, for example, 29582 + ... + 30002.

It is an arithmetic number, because the mean of its divisors is an integer number (420945).

Almost surely, 2^12542432 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 12542432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15154020).

12542432 is an abundant number, since it is smaller than the sum of its proper divisors (17765608).

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

12542432 is a wasteful number, since it uses less digits than its factorization.

12542432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464 (or 449 counting only the distinct ones).

The product of its digits is 1920, while the sum is 23.

The square root of 12542432 is about 3541.5296130345. The cubic root of 12542432 is about 232.3417476296.

Adding to 12542432 its reverse (23424521), we get a palindrome (35966953).

The spelling of 12542432 in words is "twelve million, five hundred forty-two thousand, four hundred thirty-two".