128454973 has 2 divisors, whose sum is σ = 128454974. Its totient is φ = 128454972.

The previous prime is 128454967. The next prime is 128455001. The reversal of 128454973 is 379454821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 128187684 + 267289 = 11322^2 + 517^2 .

It is a cyclic number.

It is not a de Polignac number, because 128454973 - 2⁹ = 128454461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128454923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64227486 + 64227487.

It is an arithmetic number, because the mean of its divisors is an integer number (64227487).

Almost surely, 2^128454973 is an apocalyptic number.

It is an amenable number.

128454973 is a deficient number, since it is larger than the sum of its proper divisors (1).

128454973 is an equidigital number, since it uses as much as digits as its factorization.

128454973 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 128454973 is about 11333.7978189131. The cubic root of 128454973 is about 504.5648285207.

The spelling of 128454973 in words is "one hundred twenty-eight million, four hundred fifty-four thousand, nine hundred seventy-three".