12242420 has 24 divisors (see below), whose sum is σ = 25941384. Its totient is φ = 4852736.

The previous prime is 12242359. The next prime is 12242423. The reversal of 12242420 is 2424221.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 763876 + 11478544 = 874^2 + 3388^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12242423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 449 + ... + 4968.

It is an arithmetic number, because the mean of its divisors is an integer number (1080891).

Almost surely, 2^12242420 is an apocalyptic number.

12242420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12242420 is an abundant number, since it is smaller than the sum of its proper divisors (13698964).

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

12242420 is a wasteful number, since it uses less digits than its factorization.

12242420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5539 (or 5537 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 12242420 is about 3498.9169752939. The cubic root of 12242420 is about 230.4742577081.

Adding to 12242420 its reverse (2424221), we get a palindrome (14666641).

The spelling of 12242420 in words is "twelve million, two hundred forty-two thousand, four hundred twenty".