128954743 has 2 divisors, whose sum is σ = 128954744. Its totient is φ = 128954742.

The previous prime is 128954713. The next prime is 128954747. The reversal of 128954743 is 347459821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 128954743 - 2⁵ = 128954711 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 128954743.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128954747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64477371 + 64477372.

It is an arithmetic number, because the mean of its divisors is an integer number (64477372).

Almost surely, 2^128954743 is an apocalyptic number.

128954743 is a deficient number, since it is larger than the sum of its proper divisors (1).

128954743 is an equidigital number, since it uses as much as digits as its factorization.

128954743 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 241920, while the sum is 43.

The square root of 128954743 is about 11355.8241884946. The cubic root of 128954743 is about 505.2183390734.

The spelling of 128954743 in words is "one hundred twenty-eight million, nine hundred fifty-four thousand, seven hundred forty-three".