126118849 has 2 divisors, whose sum is σ = 126118850. Its totient is φ = 126118848.

The previous prime is 126118847. The next prime is 126118859. The reversal of 126118849 is 948811621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82029249 + 44089600 = 9057^2 + 6640^2 .

It is a cyclic number.

It is not a de Polignac number, because 126118849 - 2¹ = 126118847 is a prime.

Together with 126118847, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (126118841) 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, 63059424 + 63059425.

It is an arithmetic number, because the mean of its divisors is an integer number (63059425).

Almost surely, 2^126118849 is an apocalyptic number.

It is an amenable number.

126118849 is a deficient number, since it is larger than the sum of its proper divisors (1).

126118849 is an equidigital number, since it uses as much as digits as its factorization.

126118849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27648, while the sum is 40.

The square root of 126118849 is about 11230.2648677580. The cubic root of 126118849 is about 501.4873697419.

The spelling of 126118849 in words is "one hundred twenty-six million, one hundred eighteen thousand, eight hundred forty-nine".