128200420133 has 2 divisors, whose sum is σ = 128200420134. Its totient is φ = 128200420132.

The previous prime is 128200420081. The next prime is 128200420157. The reversal of 128200420133 is 331024002821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 111594747364 + 16605672769 = 334058^2 + 128863^2 .

It is a cyclic number.

It is not a de Polignac number, because 128200420133 - 2¹² = 128200416037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128209420133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64100210066 + 64100210067.

It is an arithmetic number, because the mean of its divisors is an integer number (64100210067).

Almost surely, 2^128200420133 is an apocalyptic number.

It is an amenable number.

128200420133 is a deficient number, since it is larger than the sum of its proper divisors (1).

128200420133 is an equidigital number, since it uses as much as digits as its factorization.

128200420133 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 128200420133 its reverse (331024002821), we get a palindrome (459224422954).

The spelling of 128200420133 in words is "one hundred twenty-eight billion, two hundred million, four hundred twenty thousand, one hundred thirty-three".