128330507 has 2 divisors, whose sum is σ = 128330508. Its totient is φ = 128330506.

The previous prime is 128330491. The next prime is 128330513. The reversal of 128330507 is 705033821.

It is a strong prime.

It is an emirp because it is prime and its reverse (705033821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 128330507 - 2⁴ = 128330491 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 128330507.

It is not a weakly prime, because it can be changed into another prime (128330407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64165253 + 64165254.

It is an arithmetic number, because the mean of its divisors is an integer number (64165254).

Almost surely, 2^128330507 is an apocalyptic number.

128330507 is a deficient number, since it is larger than the sum of its proper divisors (1).

128330507 is an equidigital number, since it uses as much as digits as its factorization.

128330507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 128330507 is about 11328.3055661471. The cubic root of 128330507 is about 504.4018104113.

The spelling of 128330507 in words is "one hundred twenty-eight million, three hundred thirty thousand, five hundred seven".