127956973 has 2 divisors, whose sum is σ = 127956974. Its totient is φ = 127956972.

The previous prime is 127956971. The next prime is 127957013. The reversal of 127956973 is 379659721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 81757764 + 46199209 = 9042^2 + 6797^2 .

It is a cyclic number.

It is not a de Polignac number, because 127956973 - 2¹ = 127956971 is a prime.

Together with 127956971, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (127956971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63978486 + 63978487.

It is an arithmetic number, because the mean of its divisors is an integer number (63978487).

Almost surely, 2^127956973 is an apocalyptic number.

It is an amenable number.

127956973 is a deficient number, since it is larger than the sum of its proper divisors (1).

127956973 is an equidigital number, since it uses as much as digits as its factorization.

127956973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 714420, while the sum is 49.

The square root of 127956973 is about 11311.8067964406. The cubic root of 127956973 is about 503.9119442304.

The spelling of 127956973 in words is "one hundred twenty-seven million, nine hundred fifty-six thousand, nine hundred seventy-three".