12042042071 has 2 divisors, whose sum is σ = 12042042072. Its totient is φ = 12042042070.

The previous prime is 12042042037. The next prime is 12042042109. The reversal of 12042042071 is 17024024021.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12042042071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12042042031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6021021035 + 6021021036.

It is an arithmetic number, because the mean of its divisors is an integer number (6021021036).

Almost surely, 2^12042042071 is an apocalyptic number.

12042042071 is a deficient number, since it is larger than the sum of its proper divisors (1).

12042042071 is an equidigital number, since it uses as much as digits as its factorization.

12042042071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 896, while the sum is 23.

Adding to 12042042071 its reverse (17024024021), we get a palindrome (29066066092).

The spelling of 12042042071 in words is "twelve billion, forty-two million, forty-two thousand, seventy-one".