12240242 has 8 divisors (see below), whose sum is σ = 20983296. Its totient is φ = 5245812.

The previous prime is 12240227. The next prime is 12240271. The reversal of 12240242 is 24204221.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 12240242.

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 3 ways as a sum of consecutive naturals, for example, 437138 + ... + 437165.

It is an arithmetic number, because the mean of its divisors is an integer number (2622912).

Almost surely, 2^12240242 is an apocalyptic number.

12240242 is a deficient number, since it is larger than the sum of its proper divisors (8743054).

12240242 is an equidigital number, since it uses as much as digits as its factorization.

12240242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 874312.

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

The square root of 12240242 is about 3498.6057222842. The cubic root of 12240242 is about 230.4605893129.

Adding to 12240242 its reverse (24204221), we get a palindrome (36444463).

The spelling of 12240242 in words is "twelve million, two hundred forty thousand, two hundred forty-two".