12170424 has 96 divisors (see below), whose sum is σ = 36115200. Its totient is φ = 3407040.

The previous prime is 12170407. The next prime is 12170437. The reversal of 12170424 is 42407121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 12170424.

It is a congruent 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 23 ways as a sum of consecutive naturals, for example, 92839 + ... + 92969.

It is an arithmetic number, because the mean of its divisors is an integer number (376200).

Almost surely, 2^12170424 is an apocalyptic number.

12170424 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12170424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18057600).

12170424 is an abundant number, since it is smaller than the sum of its proper divisors (23944776).

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

12170424 is a wasteful number, since it uses less digits than its factorization.

12170424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233 (or 222 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 12170424 is about 3488.6134781601. The cubic root of 12170424 is about 230.0215732757.

Adding to 12170424 its reverse (42407121), we get a palindrome (54577545).

The spelling of 12170424 in words is "twelve million, one hundred seventy thousand, four hundred twenty-four".