12042547 has 8 divisors (see below), whose sum is σ = 13708800. Its totient is φ = 10471560.

The previous prime is 12042517. The next prime is 12042551. The reversal of 12042547 is 74524021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12042547 - 2⁷ = 12042419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12042517) 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, 23547 + ... + 24052.

It is an arithmetic number, because the mean of its divisors is an integer number (1713600).

Almost surely, 2^12042547 is an apocalyptic number.

12042547 is a deficient number, since it is larger than the sum of its proper divisors (1666253).

12042547 is a wasteful number, since it uses less digits than its factorization.

12042547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47633.

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 12042547 is about 3470.2373117699. The cubic root of 12042547 is about 229.2131080020.

Adding to 12042547 its reverse (74524021), we get a palindrome (86566568).

The spelling of 12042547 in words is "twelve million, forty-two thousand, five hundred forty-seven".