12742170 has 64 divisors (see below), whose sum is σ = 35721216. Its totient is φ = 2848320.

The previous prime is 12742153. The next prime is 12742189. The reversal of 12742170 is 7124721.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12742170.

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 31 ways as a sum of consecutive naturals, for example, 9225 + ... + 10515.

It is an arithmetic number, because the mean of its divisors is an integer number (558144).

Almost surely, 2^12742170 is an apocalyptic number.

12742170 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12742170, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17860608).

12742170 is an abundant number, since it is smaller than the sum of its proper divisors (22979046).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12742170 is a wasteful number, since it uses less digits than its factorization.

12742170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1355.

The product of its (nonzero) digits is 784, while the sum is 24.

The square root of 12742170 is about 3569.6176265813. The cubic root of 12742170 is about 233.5686039661.

Adding to 12742170 its reverse (7124721), we get a palindrome (19866891).

The spelling of 12742170 in words is "twelve million, seven hundred forty-two thousand, one hundred seventy".