12432120442 has 16 divisors (see below), whose sum is σ = 21400644672. Its totient is φ = 5305942080.

The previous prime is 12432120359. The next prime is 12432120457. The reversal of 12432120442 is 24402123421.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1838968 + ... + 1845715.

It is an arithmetic number, because the mean of its divisors is an integer number (1337540292).

Almost surely, 2^12432120442 is an apocalyptic number.

12432120442 is a deficient number, since it is larger than the sum of its proper divisors (8968524230).

12432120442 is a wasteful number, since it uses less digits than its factorization.

12432120442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3684933.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 12432120442 its reverse (24402123421), we get a palindrome (36834243863).

The spelling of 12432120442 in words is "twelve billion, four hundred thirty-two million, one hundred twenty thousand, four hundred forty-two".