128070841 has 2 divisors, whose sum is σ = 128070842. Its totient is φ = 128070840.

The previous prime is 128070821. The next prime is 128070869. The reversal of 128070841 is 148070821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 128029225 + 41616 = 11315^2 + 204^2 .

It is a cyclic number.

It is not a de Polignac number, because 128070841 - 2⁹ = 128070329 is a prime.

It is equal to p_7274821 and since 128070841 and 7274821 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (128070821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64035420 + 64035421.

It is an arithmetic number, because the mean of its divisors is an integer number (64035421).

Almost surely, 2^128070841 is an apocalyptic number.

It is an amenable number.

128070841 is a deficient number, since it is larger than the sum of its proper divisors (1).

128070841 is an equidigital number, since it uses as much as digits as its factorization.

128070841 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3584, while the sum is 31.

The square root of 128070841 is about 11316.8388253964. The cubic root of 128070841 is about 504.0613757980.

The spelling of 128070841 in words is "one hundred twenty-eight million, seventy thousand, eight hundred forty-one".