130128385 has 8 divisors (see below), whose sum is σ = 156410856. Its totient is φ = 103931520.

The previous prime is 130128379. The next prime is 130128389. The reversal of 130128385 is 583821031.

It can be written as a sum of positive squares in 4 ways, for example, as 9809424 + 120318961 = 3132^2 + 10969^2 .

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

It is not a de Polignac number, because 130128385 - 2³ = 130128377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130128389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18006 + ... + 24175.

It is an arithmetic number, because the mean of its divisors is an integer number (19551357).

Almost surely, 2^130128385 is an apocalyptic number.

It is an amenable number.

130128385 is a deficient number, since it is larger than the sum of its proper divisors (26282471).

130128385 is an equidigital number, since it uses as much as digits as its factorization.

130128385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42803.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 130128385 is about 11407.3829163398. The cubic root of 130128385 is about 506.7464091845.

The spelling of 130128385 in words is "one hundred thirty million, one hundred twenty-eight thousand, three hundred eighty-five".