126341689 has 2 divisors, whose sum is σ = 126341690. Its totient is φ = 126341688.

The previous prime is 126341681. The next prime is 126341701. The reversal of 126341689 is 986143621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75690000 + 50651689 = 8700^2 + 7117^2 .

It is an emirp because it is prime and its reverse (986143621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 126341689 - 2³ = 126341681 is a prime.

It is not a weakly prime, because it can be changed into another prime (126341681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63170844 + 63170845.

It is an arithmetic number, because the mean of its divisors is an integer number (63170845).

Almost surely, 2^126341689 is an apocalyptic number.

It is an amenable number.

126341689 is a deficient number, since it is larger than the sum of its proper divisors (1).

126341689 is an equidigital number, since it uses as much as digits as its factorization.

126341689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62208, while the sum is 40.

The square root of 126341689 is about 11240.1818935460. The cubic root of 126341689 is about 501.7825561020.

The spelling of 126341689 in words is "one hundred twenty-six million, three hundred forty-one thousand, six hundred eighty-nine".