128658743 has 2 divisors, whose sum is σ = 128658744. Its totient is φ = 128658742.

The previous prime is 128658679. The next prime is 128658769. The reversal of 128658743 is 347856821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 128658743 - 2⁶ = 128658679 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 128658694 and 128658703.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128658643) 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, 64329371 + 64329372.

It is an arithmetic number, because the mean of its divisors is an integer number (64329372).

Almost surely, 2^128658743 is an apocalyptic number.

128658743 is a deficient number, since it is larger than the sum of its proper divisors (1).

128658743 is an equidigital number, since it uses as much as digits as its factorization.

128658743 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 322560, while the sum is 44.

The square root of 128658743 is about 11342.7837412163. The cubic root of 128658743 is about 504.8314870881.

The spelling of 128658743 in words is "one hundred twenty-eight million, six hundred fifty-eight thousand, seven hundred forty-three".