12451042127 has 4 divisors (see below), whose sum is σ = 12505413720. Its totient is φ = 12396670536.

The previous prime is 12451042039. The next prime is 12451042139. The reversal of 12451042127 is 72124015421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72124015421 = 1697 ⋅42500893.

It is a cyclic number.

It is not a de Polignac number, because 12451042127 - 2⁸ = 12451041871 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12451042127.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12451042327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27185453 + ... + 27185910.

It is an arithmetic number, because the mean of its divisors is an integer number (3126353430).

Almost surely, 2^12451042127 is an apocalyptic number.

12451042127 is a deficient number, since it is larger than the sum of its proper divisors (54371593).

12451042127 is an equidigital number, since it uses as much as digits as its factorization.

12451042127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54371592.

The product of its (nonzero) digits is 4480, while the sum is 29.

Adding to 12451042127 its reverse (72124015421), we get a palindrome (84575057548).

The spelling of 12451042127 in words is "twelve billion, four hundred fifty-one million, forty-two thousand, one hundred twenty-seven".