126301009 has 2 divisors, whose sum is σ = 126301010. Its totient is φ = 126301008.

The previous prime is 126301001. The next prime is 126301051. The reversal of 126301009 is 900103621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 117657409 + 8643600 = 10847^2 + 2940^2 .

It is an emirp because it is prime and its reverse (900103621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 126301009 - 2³ = 126301001 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (126301001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63150504 + 63150505.

It is an arithmetic number, because the mean of its divisors is an integer number (63150505).

Almost surely, 2^126301009 is an apocalyptic number.

It is an amenable number.

126301009 is a deficient number, since it is larger than the sum of its proper divisors (1).

126301009 is an equidigital number, since it uses as much as digits as its factorization.

126301009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 126301009 is about 11238.3721686016. The cubic root of 126301009 is about 501.7286950058.

The spelling of 126301009 in words is "one hundred twenty-six million, three hundred one thousand, nine".