12240556 has 6 divisors (see below), whose sum is σ = 21420980. Its totient is φ = 6120276.

The previous prime is 12240511. The next prime is 12240559. The reversal of 12240556 is 65504221.

It is a super-2 number, since 2×12240556² = 299662422378272, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12240556.

It is not an unprimeable number, because it can be changed into a prime (12240559) by changing a digit.

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 as a sum of consecutive naturals, namely, 1530066 + ... + 1530073.

Almost surely, 2^12240556 is an apocalyptic number.

It is an amenable number.

12240556 is a deficient number, since it is larger than the sum of its proper divisors (9180424).

12240556 is a wasteful number, since it uses less digits than its factorization.

12240556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3060143 (or 3060141 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 12240556 is about 3498.6505970159. The cubic root of 12240556 is about 230.4625599713.

Adding to 12240556 its reverse (65504221), we get a palindrome (77744777).

The spelling of 12240556 in words is "twelve million, two hundred forty thousand, five hundred fifty-six".