128820119 has 2 divisors, whose sum is σ = 128820120. Its totient is φ = 128820118.

The previous prime is 128820103. The next prime is 128820149. The reversal of 128820119 is 911028821.

It is a weak prime.

It is an emirp because it is prime and its reverse (911028821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 128820119 - 2⁴ = 128820103 is a prime.

It is a super-2 number, since 2×128820119² = 33189246118348322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128820149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64410059 + 64410060.

It is an arithmetic number, because the mean of its divisors is an integer number (64410060).

Almost surely, 2^128820119 is an apocalyptic number.

128820119 is a deficient number, since it is larger than the sum of its proper divisors (1).

128820119 is an equidigital number, since it uses as much as digits as its factorization.

128820119 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 32.

The square root of 128820119 is about 11349.8951096475. The cubic root of 128820119 is about 505.0424680816.

The spelling of 128820119 in words is "one hundred twenty-eight million, eight hundred twenty thousand, one hundred nineteen".