126943291 has 2 divisors, whose sum is σ = 126943292. Its totient is φ = 126943290.

The previous prime is 126943273. The next prime is 126943303. The reversal of 126943291 is 192349621.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 126943291 - 2⁹ = 126942779 is a prime.

It is a super-2 number, since 2×126943291² = 32229198259821362, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 126943291.

It is not a weakly prime, because it can be changed into another prime (126943211) 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, 63471645 + 63471646.

It is an arithmetic number, because the mean of its divisors is an integer number (63471646).

Almost surely, 2^126943291 is an apocalyptic number.

126943291 is a deficient number, since it is larger than the sum of its proper divisors (1).

126943291 is an equidigital number, since it uses as much as digits as its factorization.

126943291 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23328, while the sum is 37.

The square root of 126943291 is about 11266.9113336353. The cubic root of 126943291 is about 502.5777423178.

The spelling of 126943291 in words is "one hundred twenty-six million, nine hundred forty-three thousand, two hundred ninety-one".