128104771 has 2 divisors, whose sum is σ = 128104772. Its totient is φ = 128104770.

The previous prime is 128104723. The next prime is 128104789. The reversal of 128104771 is 177401821.

It is a strong prime.

It is an emirp because it is prime and its reverse (177401821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 128104771 - 2⁷ = 128104643 is a prime.

It is not a weakly prime, because it can be changed into another prime (128104721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64052385 + 64052386.

It is an arithmetic number, because the mean of its divisors is an integer number (64052386).

Almost surely, 2^128104771 is an apocalyptic number.

128104771 is a deficient number, since it is larger than the sum of its proper divisors (1).

128104771 is an equidigital number, since it uses as much as digits as its factorization.

128104771 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3136, while the sum is 31.

The square root of 128104771 is about 11318.3378196624. The cubic root of 128104771 is about 504.1058857796.

The spelling of 128104771 in words is "one hundred twenty-eight million, one hundred four thousand, seven hundred seventy-one".