12180547 has 8 divisors (see below), whose sum is σ = 12890880. Its totient is φ = 11485320.

The previous prime is 12180529. The next prime is 12180557. The reversal of 12180547 is 74508121.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12180547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12180527) 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, 2097 + ... + 5362.

It is an arithmetic number, because the mean of its divisors is an integer number (1611360).

Almost surely, 2^12180547 is an apocalyptic number.

12180547 is a deficient number, since it is larger than the sum of its proper divisors (710333).

12180547 is an equidigital number, since it uses as much as digits as its factorization.

12180547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7553.

The product of its (nonzero) digits is 2240, while the sum is 28.

The square root of 12180547 is about 3490.0640395271. The cubic root of 12180547 is about 230.0853306570.

Adding to 12180547 its reverse (74508121), we get a palindrome (86688668).

The spelling of 12180547 in words is "twelve million, one hundred eighty thousand, five hundred forty-seven".