128304061 has 2 divisors, whose sum is σ = 128304062. Its totient is φ = 128304060.

The previous prime is 128304053. The next prime is 128304067. The reversal of 128304061 is 160403821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 86378436 + 41925625 = 9294^2 + 6475^2 .

It is a cyclic number.

It is not a de Polignac number, because 128304061 - 2³ = 128304053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128304067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64152030 + 64152031.

It is an arithmetic number, because the mean of its divisors is an integer number (64152031).

Almost surely, 2^128304061 is an apocalyptic number.

It is an amenable number.

128304061 is a deficient number, since it is larger than the sum of its proper divisors (1).

128304061 is an equidigital number, since it uses as much as digits as its factorization.

128304061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 128304061 is about 11327.1382528863. The cubic root of 128304061 is about 504.3671594489.

Adding to 128304061 its reverse (160403821), we get a palindrome (288707882).

The spelling of 128304061 in words is "one hundred twenty-eight million, three hundred four thousand, sixty-one".