127998943 has 2 divisors, whose sum is σ = 127998944. Its totient is φ = 127998942.

The previous prime is 127998929. The next prime is 127998961. The reversal of 127998943 is 349899721.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 127998943 - 2⁵ = 127998911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (127998443) 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, 63999471 + 63999472.

It is an arithmetic number, because the mean of its divisors is an integer number (63999472).

Almost surely, 2^127998943 is an apocalyptic number.

127998943 is a deficient number, since it is larger than the sum of its proper divisors (1).

127998943 is an equidigital number, since it uses as much as digits as its factorization.

127998943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 979776, while the sum is 52.

The square root of 127998943 is about 11313.6617856466. The cubic root of 127998943 is about 503.9670327286.

The spelling of 127998943 in words is "one hundred twenty-seven million, nine hundred ninety-eight thousand, nine hundred forty-three".