300005129 has 2 divisors, whose sum is σ = 300005130. Its totient is φ = 300005128.

The previous prime is 300005099. The next prime is 300005131. The reversal of 300005129 is 921500003.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 281065225 + 18939904 = 16765^2 + 4352^2 .

It is a cyclic number.

It is not a de Polignac number, because 300005129 - 2¹² = 300001033 is a prime.

Together with 300005131, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 300005129.

It is not a weakly prime, because it can be changed into another prime (300005729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 150002564 + 150002565.

It is an arithmetic number, because the mean of its divisors is an integer number (150002565).

Almost surely, 2^300005129 is an apocalyptic number.

It is an amenable number.

300005129 is a deficient number, since it is larger than the sum of its proper divisors (1).

300005129 is an equidigital number, since it uses as much as digits as its factorization.

300005129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 270, while the sum is 20.

The square root of 300005129 is about 17320.6561365325. The cubic root of 300005129 is about 669.4367650844.

The spelling of 300005129 in words is "three hundred million, five thousand, one hundred twenty-nine".