12040512 has 56 divisors (see below), whose sum is σ = 34759392. Its totient is φ = 3648000.

The previous prime is 12040463. The next prime is 12040517. The reversal of 12040512 is 21504021.

12040512 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 12040491 and 12040500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12040517) 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, 739 + ... + 4962.

Almost surely, 2^12040512 is an apocalyptic number.

12040512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12040512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17379696).

12040512 is an abundant number, since it is smaller than the sum of its proper divisors (22718880).

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

12040512 is a wasteful number, since it uses less digits than its factorization.

12040512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5727 (or 5717 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 12040512 is about 3469.9440917686. The cubic root of 12040512 is about 229.2001961446.

Adding to 12040512 its reverse (21504021), we get a palindrome (33544533).

The spelling of 12040512 in words is "twelve million, forty thousand, five hundred twelve".