12129170 has 8 divisors (see below), whose sum is σ = 21832524. Its totient is φ = 4851664.

The previous prime is 12129167. The next prime is 12129197. The reversal of 12129170 is 7192121.

It can be written as a sum of positive squares in 2 ways, for example, as 10804369 + 1324801 = 3287^2 + 1151^2 .

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

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 606449 + ... + 606468.

Almost surely, 2^12129170 is an apocalyptic number.

12129170 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12129170 is a deficient number, since it is larger than the sum of its proper divisors (9703354).

12129170 is a wasteful number, since it uses less digits than its factorization.

12129170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1212924.

The product of its (nonzero) digits is 252, while the sum is 23.

The square root of 12129170 is about 3482.6957949267. The cubic root of 12129170 is about 229.7613782278.

The spelling of 12129170 in words is "twelve million, one hundred twenty-nine thousand, one hundred seventy".