12040542 has 32 divisors (see below), whose sum is σ = 26883360. Its totient is φ = 3994560.

The previous prime is 12040537. The next prime is 12040571. The reversal of 12040542 is 24504021.

12040542 is a `hidden beast` number, since 120 + 4 + 0 + 542 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15442 + ... + 16202.

It is an arithmetic number, because the mean of its divisors is an integer number (840105).

Almost surely, 2^12040542 is an apocalyptic number.

12040542 is an abundant number, since it is smaller than the sum of its proper divisors (14842818).

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

12040542 is a wasteful number, since it uses less digits than its factorization.

12040542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1065 (or 1059 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 12040542 is about 3469.9484146022. The cubic root of 12040542 is about 229.2003865019.

Adding to 12040542 its reverse (24504021), we get a palindrome (36544563).

The spelling of 12040542 in words is "twelve million, forty thousand, five hundred forty-two".