128326097 has 2 divisors, whose sum is σ = 128326098. Its totient is φ = 128326096.

The previous prime is 128325983. The next prime is 128326103. The reversal of 128326097 is 790623821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120209296 + 8116801 = 10964^2 + 2849^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128326097 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 128326097.

It is not a weakly prime, because it can be changed into another prime (128328097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64163048 + 64163049.

It is an arithmetic number, because the mean of its divisors is an integer number (64163049).

Almost surely, 2^128326097 is an apocalyptic number.

It is an amenable number.

128326097 is a deficient number, since it is larger than the sum of its proper divisors (1).

128326097 is an equidigital number, since it uses as much as digits as its factorization.

128326097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 128326097 is about 11328.1109193016. The cubic root of 128326097 is about 504.3960325244.

The spelling of 128326097 in words is "one hundred twenty-eight million, three hundred twenty-six thousand, ninety-seven".