128667043 has 2 divisors, whose sum is σ = 128667044. Its totient is φ = 128667042.

The previous prime is 128667029. The next prime is 128667047. The reversal of 128667043 is 340766821.

It is a strong prime.

It is an emirp because it is prime and its reverse (340766821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 128667043 - 2¹³ = 128658851 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 128666993 and 128667011.

It is not a weakly prime, because it can be changed into another prime (128667047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64333521 + 64333522.

It is an arithmetic number, because the mean of its divisors is an integer number (64333522).

Almost surely, 2^128667043 is an apocalyptic number.

128667043 is a deficient number, since it is larger than the sum of its proper divisors (1).

128667043 is an equidigital number, since it uses as much as digits as its factorization.

128667043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 128667043 is about 11343.1496067010. The cubic root of 128667043 is about 504.8423427080.

The spelling of 128667043 in words is "one hundred twenty-eight million, six hundred sixty-seven thousand, forty-three".