126881017 has 2 divisors, whose sum is σ = 126881018. Its totient is φ = 126881016.

The previous prime is 126881009. The next prime is 126881039. The reversal of 126881017 is 710188621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 106998336 + 19882681 = 10344^2 + 4459^2 .

It is an emirp because it is prime and its reverse (710188621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 126881017 - 2³ = 126881009 is a prime.

It is not a weakly prime, because it can be changed into another prime (126881057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63440508 + 63440509.

It is an arithmetic number, because the mean of its divisors is an integer number (63440509).

Almost surely, 2^126881017 is an apocalyptic number.

It is an amenable number.

126881017 is a deficient number, since it is larger than the sum of its proper divisors (1).

126881017 is an equidigital number, since it uses as much as digits as its factorization.

126881017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5376, while the sum is 34.

The square root of 126881017 is about 11264.1474155837. The cubic root of 126881017 is about 502.4955464404.

The spelling of 126881017 in words is "one hundred twenty-six million, eight hundred eighty-one thousand, seventeen".