127664143 has 2 divisors, whose sum is σ = 127664144. Its totient is φ = 127664142.

The previous prime is 127664137. The next prime is 127664149. The reversal of 127664143 is 341466721.

It is a balanced prime because it is at equal distance from previous prime (127664137) and next prime (127664149).

It is an emirp because it is prime and its reverse (341466721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 127664143 - 2¹⁷ = 127533071 is a prime.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 127664099 and 127664108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (127664149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63832071 + 63832072.

It is an arithmetic number, because the mean of its divisors is an integer number (63832072).

Almost surely, 2^127664143 is an apocalyptic number.

127664143 is a deficient number, since it is larger than the sum of its proper divisors (1).

127664143 is an equidigital number, since it uses as much as digits as its factorization.

127664143 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 34.

The square root of 127664143 is about 11298.8558270296. The cubic root of 127664143 is about 503.5272491808.

The spelling of 127664143 in words is "one hundred twenty-seven million, six hundred sixty-four thousand, one hundred forty-three".