128545307 has 4 divisors (see below), whose sum is σ = 140231256. Its totient is φ = 116859360.

The previous prime is 128545301. The next prime is 128545309. The reversal of 128545307 is 703545821.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 703545821 = 11 ⋅63958711.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128545307 is a prime.

It is not an unprimeable number, because it can be changed into a prime (128545301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5842958 + ... + 5842979.

It is an arithmetic number, because the mean of its divisors is an integer number (35057814).

Almost surely, 2^128545307 is an apocalyptic number.

128545307 is a deficient number, since it is larger than the sum of its proper divisors (11685949).

128545307 is a wasteful number, since it uses less digits than its factorization.

128545307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11685948.

The product of its (nonzero) digits is 33600, while the sum is 35.

The square root of 128545307 is about 11337.7822787351. The cubic root of 128545307 is about 504.6830766456.

The spelling of 128545307 in words is "one hundred twenty-eight million, five hundred forty-five thousand, three hundred seven".