12040172 has 12 divisors (see below), whose sum is σ = 21560616. Its totient is φ = 5880000.

The previous prime is 12040163. The next prime is 12040177. The reversal of 12040172 is 27104021.

It is a hoax number, since the sum of its digits (17) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 12040172.

It is not an unprimeable number, because it can be changed into a prime (12040177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34829 + ... + 35172.

It is an arithmetic number, because the mean of its divisors is an integer number (1796718).

Almost surely, 2^12040172 is an apocalyptic number.

It is an amenable number.

12040172 is a deficient number, since it is larger than the sum of its proper divisors (9520444).

12040172 is a wasteful number, since it uses less digits than its factorization.

12040172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70048 (or 70046 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 17.

The square root of 12040172 is about 3469.8950992789. The cubic root of 12040172 is about 229.1980387391.

Adding to 12040172 its reverse (27104021), we get a palindrome (39144193).

The spelling of 12040172 in words is "twelve million, forty thousand, one hundred seventy-two".