128907941 has 2 divisors, whose sum is σ = 128907942. Its totient is φ = 128907940.

The previous prime is 128907931. The next prime is 128907953. The reversal of 128907941 is 149709821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 128709025 + 198916 = 11345^2 + 446^2 .

It is a cyclic number.

It is not a de Polignac number, because 128907941 - 2¹⁴ = 128891557 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128907931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64453970 + 64453971.

It is an arithmetic number, because the mean of its divisors is an integer number (64453971).

Almost surely, 2^128907941 is an apocalyptic number.

It is an amenable number.

128907941 is a deficient number, since it is larger than the sum of its proper divisors (1).

128907941 is an equidigital number, since it uses as much as digits as its factorization.

128907941 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 41.

The square root of 128907941 is about 11353.7632968104. The cubic root of 128907941 is about 505.1572114528.

The spelling of 128907941 in words is "one hundred twenty-eight million, nine hundred seven thousand, nine hundred forty-one".