12042443403 has 24 divisors (see below), whose sum is σ = 17578496000. Its totient is φ = 7943778864.

The previous prime is 12042443351. The next prime is 12042443407. The reversal of 12042443403 is 30434424021.

It is a happy number.

12042443403 is a `hidden beast` number, since 1 + 204 + 24 + 434 + 0 + 3 = 666.

12042443403 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12042443403 - 2¹⁸ = 12042181259 is a prime.

It is a super-2 number, since 2×12042443403² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12042443407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 419298 + ... + 447096.

Almost surely, 2^12042443403 is an apocalyptic number.

12042443403 is a deficient number, since it is larger than the sum of its proper divisors (5536052597).

12042443403 is a wasteful number, since it uses less digits than its factorization.

12042443403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28311 (or 28308 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 12042443403 its reverse (30434424021), we get a palindrome (42476867424).

The spelling of 12042443403 in words is "twelve billion, forty-two million, four hundred forty-three thousand, four hundred three".