10128109 has 2 divisors, whose sum is σ = 10128110. Its totient is φ = 10128108.

The previous prime is 10128089. The next prime is 10128127. The reversal of 10128109 is 90182101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5654884 + 4473225 = 2378^2 + 2115^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10128109 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10128109.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10128199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5064054 + 5064055.

It is an arithmetic number, because the mean of its divisors is an integer number (5064055).

Almost surely, 2^10128109 is an apocalyptic number.

It is an amenable number.

10128109 is a deficient number, since it is larger than the sum of its proper divisors (1).

10128109 is an equidigital number, since it uses as much as digits as its factorization.

10128109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 22.

The square root of 10128109 is about 3182.4690100612. The cubic root of 10128109 is about 216.3595762624.

The spelling of 10128109 in words is "ten million, one hundred twenty-eight thousand, one hundred nine".