12040556 has 24 divisors (see below), whose sum is σ = 24340176. Its totient is φ = 5150720.

The previous prime is 12040537. The next prime is 12040571. The reversal of 12040556 is 65504021.

12040556 = 68² + 69² + ... + 331².

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7301 + ... + 8796.

It is an arithmetic number, because the mean of its divisors is an integer number (1014174).

Almost surely, 2^12040556 is an apocalyptic number.

It is an amenable number.

12040556 is an abundant number, since it is smaller than the sum of its proper divisors (12299620).

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

12040556 is a wasteful number, since it uses less digits than its factorization.

12040556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16129 (or 16127 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 12040556 is about 3469.9504319226. The cubic root of 12040556 is about 229.2004753352.

Adding to 12040556 its reverse (65504021), we get a palindrome (77544577).

The spelling of 12040556 in words is "twelve million, forty thousand, five hundred fifty-six".