12032421243 has 4 divisors (see below), whose sum is σ = 16043228328. Its totient is φ = 8021614160.

The previous prime is 12032421241. The next prime is 12032421253. The reversal of 12032421243 is 34212423021.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12032421243 - 2¹ = 12032421241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12032421241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2005403538 + ... + 2005403543.

It is an arithmetic number, because the mean of its divisors is an integer number (4010807082).

Almost surely, 2^12032421243 is an apocalyptic number.

12032421243 is a deficient number, since it is larger than the sum of its proper divisors (4010807085).

12032421243 is an equidigital number, since it uses as much as digits as its factorization.

12032421243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4010807084.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 12032421243 its reverse (34212423021), we get a palindrome (46244844264).

The spelling of 12032421243 in words is "twelve billion, thirty-two million, four hundred twenty-one thousand, two hundred forty-three".