127144242881 has 2 divisors, whose sum is σ = 127144242882. Its totient is φ = 127144242880.

The previous prime is 127144242871. The next prime is 127144242923. The reversal of 127144242881 is 188242441721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 117988815025 + 9155427856 = 343495^2 + 95684^2 .

It is a cyclic number.

It is not a de Polignac number, because 127144242881 - 2¹⁴ = 127144226497 is a prime.

It is a super-2 number, since 2×127144242881² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (127144242821) 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, 63572121440 + 63572121441.

It is an arithmetic number, because the mean of its divisors is an integer number (63572121441).

Almost surely, 2^127144242881 is an apocalyptic number.

It is an amenable number.

127144242881 is a deficient number, since it is larger than the sum of its proper divisors (1).

127144242881 is an equidigital number, since it uses as much as digits as its factorization.

127144242881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 229376, while the sum is 44.

The spelling of 127144242881 in words is "one hundred twenty-seven billion, one hundred forty-four million, two hundred forty-two thousand, eight hundred eighty-one".