12043542 has 16 divisors (see below), whose sum is σ = 27528192. Its totient is φ = 3441000.

The previous prime is 12043541. The next prime is 12043553. The reversal of 12043542 is 24534021.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12043541) 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 in 7 ways as a sum of consecutive naturals, for example, 143334 + ... + 143417.

It is an arithmetic number, because the mean of its divisors is an integer number (1720512).

Almost surely, 2^12043542 is an apocalyptic number.

12043542 is an abundant number, since it is smaller than the sum of its proper divisors (15484650).

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

12043542 is a wasteful number, since it uses less digits than its factorization.

12043542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286763.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 12043542 is about 3470.3806707622. The cubic root of 12043542 is about 229.2194206412.

Adding to 12043542 its reverse (24534021), we get a palindrome (36577563).

The spelling of 12043542 in words is "twelve million, forty-three thousand, five hundred forty-two".