12128195 has 8 divisors (see below), whose sum is σ = 14586000. Its totient is φ = 9681120.

The previous prime is 12128189. The next prime is 12128219. The reversal of 12128195 is 59182121.

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

It is not a de Polignac number, because 12128195 - 2⁶ = 12128131 is a prime.

It is a super-2 number, since 2×12128195² = 294186227916050, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 65 + ... + 4925.

It is an arithmetic number, because the mean of its divisors is an integer number (1823250).

Almost surely, 2^12128195 is an apocalyptic number.

12128195 is a deficient number, since it is larger than the sum of its proper divisors (2457805).

12128195 is an equidigital number, since it uses as much as digits as its factorization.

12128195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5365.

The product of its digits is 1440, while the sum is 29.

The square root of 12128195 is about 3482.5558143410. Note that the first 3 decimals coincide. The cubic root of 12128195 is about 229.7552216277.

The spelling of 12128195 in words is "twelve million, one hundred twenty-eight thousand, one hundred ninety-five".