128112007 has 8 divisors (see below), whose sum is σ = 132890384. Its totient is φ = 123415488.

The previous prime is 128111999. The next prime is 128112011. The reversal of 128112007 is 700211821.

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

It is a cyclic number.

It is not a de Polignac number, because 128112007 - 2³ = 128111999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128112037) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17268 + ... + 23545.

It is an arithmetic number, because the mean of its divisors is an integer number (16611298).

Almost surely, 2^128112007 is an apocalyptic number.

128112007 is a deficient number, since it is larger than the sum of its proper divisors (4778377).

128112007 is an equidigital number, since it uses as much as digits as its factorization.

128112007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40929.

The product of its (nonzero) digits is 224, while the sum is 22.

The square root of 128112007 is about 11318.6574733932. The cubic root of 128112007 is about 504.1153770772.

Adding to 128112007 its reverse (700211821), we get a palindrome (828323828).

The spelling of 128112007 in words is "one hundred twenty-eight million, one hundred twelve thousand, seven".