12071424 has 80 divisors (see below), whose sum is σ = 33390720. Its totient is φ = 3870720.

The previous prime is 12071407. The next prime is 12071429. The reversal of 12071424 is 42417021.

It is a happy number.

It is a nialpdrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 12071424.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12071429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44409 + ... + 44679.

It is an arithmetic number, because the mean of its divisors is an integer number (417384).

Almost surely, 2^12071424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12071424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16695360).

12071424 is an abundant number, since it is smaller than the sum of its proper divisors (21319296).

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

12071424 is an equidigital number, since it uses as much as digits as its factorization.

12071424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321 (or 305 counting only the distinct ones).

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

The square root of 12071424 is about 3474.3954869876. The cubic root of 12071424 is about 229.3961729126.

Adding to 12071424 its reverse (42417021), we get a palindrome (54488445).

The spelling of 12071424 in words is "twelve million, seventy-one thousand, four hundred twenty-four".