12120042043 has 2 divisors, whose sum is σ = 12120042044. Its totient is φ = 12120042042.

The previous prime is 12120042037. The next prime is 12120042059. The reversal of 12120042043 is 34024002121.

12120042043 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (34024002121) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12120042043 is a prime.

It is a super-2 number, since 2×12120042043² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12120042043.

It is not a weakly prime, because it can be changed into another prime (12120042343) 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 as a sum of consecutive naturals, namely, 6060021021 + 6060021022.

It is an arithmetic number, because the mean of its divisors is an integer number (6060021022).

Almost surely, 2^12120042043 is an apocalyptic number.

12120042043 is a deficient number, since it is larger than the sum of its proper divisors (1).

12120042043 is an equidigital number, since it uses as much as digits as its factorization.

12120042043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 12120042043 its reverse (34024002121), we get a palindrome (46144044164).

The spelling of 12120042043 in words is "twelve billion, one hundred twenty million, forty-two thousand, forty-three".