128570401 has 2 divisors, whose sum is σ = 128570402. Its totient is φ = 128570400.

The previous prime is 128570389. The next prime is 128570411. The reversal of 128570401 is 104075821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 127803025 + 767376 = 11305^2 + 876^2 .

It is a cyclic number.

It is not a de Polignac number, because 128570401 - 2¹¹ = 128568353 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 128570401.

It is not a weakly prime, because it can be changed into another prime (128570411) 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, 64285200 + 64285201.

It is an arithmetic number, because the mean of its divisors is an integer number (64285201).

Almost surely, 2^128570401 is an apocalyptic number.

It is an amenable number.

128570401 is a deficient number, since it is larger than the sum of its proper divisors (1).

128570401 is an equidigital number, since it uses as much as digits as its factorization.

128570401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2240, while the sum is 28.

The square root of 128570401 is about 11338.8888785454. Note that the first 4 decimals coincide. The cubic root of 128570401 is about 504.7159151142.

The spelling of 128570401 in words is "one hundred twenty-eight million, five hundred seventy thousand, four hundred one".