128345201 has 2 divisors, whose sum is σ = 128345202. Its totient is φ = 128345200.

The previous prime is 128345183. The next prime is 128345309. The reversal of 128345201 is 102543821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 128232976 + 112225 = 11324^2 + 335^2 .

It is a cyclic number.

It is not a de Polignac number, because 128345201 - 2⁶ = 128345137 is a prime.

It is not a weakly prime, because it can be changed into another prime (128345101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64172600 + 64172601.

It is an arithmetic number, because the mean of its divisors is an integer number (64172601).

Almost surely, 2^128345201 is an apocalyptic number.

It is an amenable number.

128345201 is a deficient number, since it is larger than the sum of its proper divisors (1).

128345201 is an equidigital number, since it uses as much as digits as its factorization.

128345201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 128345201 is about 11328.9541000041. The cubic root of 128345201 is about 504.4210612179.

The spelling of 128345201 in words is "one hundred twenty-eight million, three hundred forty-five thousand, two hundred one".