128032130 has 8 divisors (see below), whose sum is σ = 230457852. Its totient is φ = 51212848.

The previous prime is 128032097. The next prime is 128032141. The reversal of 128032130 is 31230821.

It can be written as a sum of positive squares in 2 ways, for example, as 125507209 + 2524921 = 11203^2 + 1589^2 .

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

It is a Curzon number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 6401597 + ... + 6401616.

Almost surely, 2^128032130 is an apocalyptic number.

128032130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128032130 is a deficient number, since it is larger than the sum of its proper divisors (102425722).

128032130 is a wasteful number, since it uses less digits than its factorization.

128032130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12803220.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 128032130 is about 11315.1283686930. The cubic root of 128032130 is about 504.0105844128.

Adding to 128032130 its reverse (31230821), we get a palindrome (159262951).

The spelling of 128032130 in words is "one hundred twenty-eight million, thirty-two thousand, one hundred thirty".