128785103 has 2 divisors, whose sum is σ = 128785104. Its totient is φ = 128785102.

The previous prime is 128785079. The next prime is 128785109. The reversal of 128785103 is 301587821.

It is a strong prime.

It is an emirp because it is prime and its reverse (301587821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 128785103 - 2¹⁶ = 128719567 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128785109) 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, 64392551 + 64392552.

It is an arithmetic number, because the mean of its divisors is an integer number (64392552).

Almost surely, 2^128785103 is an apocalyptic number.

128785103 is a deficient number, since it is larger than the sum of its proper divisors (1).

128785103 is an equidigital number, since it uses as much as digits as its factorization.

128785103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13440, while the sum is 35.

The square root of 128785103 is about 11348.3524354860. The cubic root of 128785103 is about 504.9967035696.

The spelling of 128785103 in words is "one hundred twenty-eight million, seven hundred eighty-five thousand, one hundred three".