128173007 has 2 divisors, whose sum is σ = 128173008. Its totient is φ = 128173006.

The previous prime is 128172977. The next prime is 128173009. The reversal of 128173007 is 700371821.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128173007 is a prime.

Together with 128173009, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128173009) 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, 64086503 + 64086504.

It is an arithmetic number, because the mean of its divisors is an integer number (64086504).

Almost surely, 2^128173007 is an apocalyptic number.

128173007 is a deficient number, since it is larger than the sum of its proper divisors (1).

128173007 is an equidigital number, since it uses as much as digits as its factorization.

128173007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2352, while the sum is 29.

The square root of 128173007 is about 11321.3518185771. The cubic root of 128173007 is about 504.1953751959.

The spelling of 128173007 in words is "one hundred twenty-eight million, one hundred seventy-three thousand, seven".