126244681 has 2 divisors, whose sum is σ = 126244682. Its totient is φ = 126244680.

The previous prime is 126244663. The next prime is 126244709. The reversal of 126244681 is 186442621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73188025 + 53056656 = 8555^2 + 7284^2 .

It is a cyclic number.

It is not a de Polignac number, because 126244681 - 2⁷ = 126244553 is a prime.

It is a super-2 number, since 2×126244681² = 31875438961583522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (126244621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63122340 + 63122341.

It is an arithmetic number, because the mean of its divisors is an integer number (63122341).

Almost surely, 2^126244681 is an apocalyptic number.

It is an amenable number.

126244681 is a deficient number, since it is larger than the sum of its proper divisors (1).

126244681 is an equidigital number, since it uses as much as digits as its factorization.

126244681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18432, while the sum is 34.

The square root of 126244681 is about 11235.8658322356. The cubic root of 126244681 is about 501.6540965616.

The spelling of 126244681 in words is "one hundred twenty-six million, two hundred forty-four thousand, six hundred eighty-one".