128200169 has 2 divisors, whose sum is σ = 128200170. Its totient is φ = 128200168.

The previous prime is 128200151. The next prime is 128200187. The reversal of 128200169 is 961002821.

It is a balanced prime because it is at equal distance from previous prime (128200151) and next prime (128200187).

It can be written as a sum of positive squares in only one way, i.e., 113145769 + 15054400 = 10637^2 + 3880^2 .

It is a cyclic number.

It is not a de Polignac number, because 128200169 - 2²⁰ = 127151593 is a prime.

It is a super-2 number, since 2×128200169² = 32870566663257122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (128200199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64100084 + 64100085.

It is an arithmetic number, because the mean of its divisors is an integer number (64100085).

Almost surely, 2^128200169 is an apocalyptic number.

It is an amenable number.

128200169 is a deficient number, since it is larger than the sum of its proper divisors (1).

128200169 is an equidigital number, since it uses as much as digits as its factorization.

128200169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 128200169 is about 11322.5513467593. The cubic root of 128200169 is about 504.2309884861.

The spelling of 128200169 in words is "one hundred twenty-eight million, two hundred thousand, one hundred sixty-nine".