126299123 has 2 divisors, whose sum is σ = 126299124. Its totient is φ = 126299122.

The previous prime is 126299113. The next prime is 126299149. The reversal of 126299123 is 321992621.

It is a weak prime.

It is an emirp because it is prime and its reverse (321992621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 126299123 - 2⁶ = 126299059 is a prime.

It is not a weakly prime, because it can be changed into another prime (126299113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63149561 + 63149562.

It is an arithmetic number, because the mean of its divisors is an integer number (63149562).

Almost surely, 2^126299123 is an apocalyptic number.

126299123 is a deficient number, since it is larger than the sum of its proper divisors (1).

126299123 is an equidigital number, since it uses as much as digits as its factorization.

126299123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11664, while the sum is 35.

The square root of 126299123 is about 11238.2882593391. The cubic root of 126299123 is about 501.7261976253.

The spelling of 126299123 in words is "one hundred twenty-six million, two hundred ninety-nine thousand, one hundred twenty-three".