128160401 has 2 divisors, whose sum is σ = 128160402. Its totient is φ = 128160400.

The previous prime is 128160371. The next prime is 128160463. The reversal of 128160401 is 104061821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120978001 + 7182400 = 10999^2 + 2680^2 .

It is a cyclic number.

It is not a de Polignac number, because 128160401 - 2⁶ = 128160337 is a prime.

It is not a weakly prime, because it can be changed into another prime (128160101) 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, 64080200 + 64080201.

It is an arithmetic number, because the mean of its divisors is an integer number (64080201).

Almost surely, 2^128160401 is an apocalyptic number.

It is an amenable number.

128160401 is a deficient number, since it is larger than the sum of its proper divisors (1).

128160401 is an equidigital number, since it uses as much as digits as its factorization.

128160401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 128160401 is about 11320.7950692520. The cubic root of 128160401 is about 504.1788452067.

The spelling of 128160401 in words is "one hundred twenty-eight million, one hundred sixty thousand, four hundred one".