12040123289 has 2 divisors, whose sum is σ = 12040123290. Its totient is φ = 12040123288.

The previous prime is 12040123267. The next prime is 12040123307. The reversal of 12040123289 is 98232104021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11841792400 + 198330889 = 108820^2 + 14083^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12040123289 is a prime.

It is not a weakly prime, because it can be changed into another prime (12040125289) 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 as a sum of consecutive naturals, namely, 6020061644 + 6020061645.

It is an arithmetic number, because the mean of its divisors is an integer number (6020061645).

Almost surely, 2^12040123289 is an apocalyptic number.

It is an amenable number.

12040123289 is a deficient number, since it is larger than the sum of its proper divisors (1).

12040123289 is an equidigital number, since it uses as much as digits as its factorization.

12040123289 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 32.

The spelling of 12040123289 in words is "twelve billion, forty million, one hundred twenty-three thousand, two hundred eighty-nine".