12432342040 has 64 divisors (see below), whose sum is σ = 28176528960. Its totient is φ = 4936826880.

The previous prime is 12432342017. The next prime is 12432342047. The reversal of 12432342040 is 4024323421.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12432341996 and 12432342014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12432342047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4453045 + ... + 4455835.

It is an arithmetic number, because the mean of its divisors is an integer number (440258265).

Almost surely, 2^12432342040 is an apocalyptic number.

12432342040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12432342040 is an abundant number, since it is smaller than the sum of its proper divisors (15744186920).

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

12432342040 is a wasteful number, since it uses less digits than its factorization.

12432342040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3572 (or 3568 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 12432342040 its reverse (4024323421), we get a palindrome (16456665461).

The spelling of 12432342040 in words is "twelve billion, four hundred thirty-two million, three hundred forty-two thousand, forty".