126249349 has 2 divisors, whose sum is σ = 126249350. Its totient is φ = 126249348.

The previous prime is 126249341. The next prime is 126249353. The reversal of 126249349 is 943942621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 115240225 + 11009124 = 10735^2 + 3318^2 .

It is an emirp because it is prime and its reverse (943942621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 126249349 - 2³ = 126249341 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126249341) 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, 63124674 + 63124675.

It is an arithmetic number, because the mean of its divisors is an integer number (63124675).

Almost surely, 2^126249349 is an apocalyptic number.

It is an amenable number.

126249349 is a deficient number, since it is larger than the sum of its proper divisors (1).

126249349 is an equidigital number, since it uses as much as digits as its factorization.

126249349 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 93312, while the sum is 40.

The square root of 126249349 is about 11236.0735579650. The cubic root of 126249349 is about 501.6602795084.

The spelling of 126249349 in words is "one hundred twenty-six million, two hundred forty-nine thousand, three hundred forty-nine".