128345107 has 8 divisors (see below), whose sum is σ = 141373440. Its totient is φ = 115543560.

The previous prime is 128345101. The next prime is 128345123. The reversal of 128345107 is 701543821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-128345107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128345101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55507 + ... + 57772.

It is an arithmetic number, because the mean of its divisors is an integer number (17671680).

Almost surely, 2^128345107 is an apocalyptic number.

128345107 is a deficient number, since it is larger than the sum of its proper divisors (13028333).

128345107 is a wasteful number, since it uses less digits than its factorization.

128345107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113393.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 128345107 is about 11328.9499513415. The cubic root of 128345107 is about 504.4209380720.

Adding to 128345107 its reverse (701543821), we get a palindrome (829888928).

The spelling of 128345107 in words is "one hundred twenty-eight million, three hundred forty-five thousand, one hundred seven".