128745007 has 16 divisors (see below), whose sum is σ = 146304000. Its totient is φ = 112631904.

The previous prime is 128744983. The next prime is 128745013. The reversal of 128745007 is 700547821.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128745007 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 (128745707) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7594 + ... + 17752.

It is an arithmetic number, because the mean of its divisors is an integer number (9144000).

Almost surely, 2^128745007 is an apocalyptic number.

128745007 is a deficient number, since it is larger than the sum of its proper divisors (17558993).

128745007 is a wasteful number, since it uses less digits than its factorization.

128745007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10230.

The product of its (nonzero) digits is 15680, while the sum is 34.

The square root of 128745007 is about 11346.5856979093. The cubic root of 128745007 is about 504.9442895117.

The spelling of 128745007 in words is "one hundred twenty-eight million, seven hundred forty-five thousand, seven".