128297219 has 2 divisors, whose sum is σ = 128297220. Its totient is φ = 128297218.

The previous prime is 128297203. The next prime is 128297231. The reversal of 128297219 is 912792821.

It is a strong prime.

It is an emirp because it is prime and its reverse (912792821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 128297219 - 2⁴ = 128297203 is a prime.

It is a super-2 number, since 2×128297219² = 32920352806267922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (128297119) 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, 64148609 + 64148610.

It is an arithmetic number, because the mean of its divisors is an integer number (64148610).

Almost surely, 2^128297219 is an apocalyptic number.

128297219 is a deficient number, since it is larger than the sum of its proper divisors (1).

128297219 is an equidigital number, since it uses as much as digits as its factorization.

128297219 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 41.

The square root of 128297219 is about 11326.8362308281. The cubic root of 128297219 is about 504.3581939197.

The spelling of 128297219 in words is "one hundred twenty-eight million, two hundred ninety-seven thousand, two hundred nineteen".