12129770 has 16 divisors (see below), whose sum is σ = 22007808. Its totient is φ = 4813200.

The previous prime is 12129769. The next prime is 12129781. The reversal of 12129770 is 7792121.

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 7 ways as a sum of consecutive naturals, for example, 3506 + ... + 6045.

It is an arithmetic number, because the mean of its divisors is an integer number (1375488).

Almost surely, 2^12129770 is an apocalyptic number.

12129770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12129770 is a deficient number, since it is larger than the sum of its proper divisors (9878038).

12129770 is a wasteful number, since it uses less digits than its factorization.

12129770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9685.

The product of its (nonzero) digits is 1764, while the sum is 29.

The square root of 12129770 is about 3482.7819340292. The cubic root of 12129770 is about 229.7651667407.

The spelling of 12129770 in words is "twelve million, one hundred twenty-nine thousand, seven hundred seventy".