12143516 has 48 divisors (see below), whose sum is σ = 26853120. Its totient is φ = 4667520.

The previous prime is 12143513. The next prime is 12143561. The reversal of 12143516 is 61534121.

It is a junction number, because it is equal to n+sod(n) for n = 12143491 and 12143500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12143513) 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 15 ways as a sum of consecutive naturals, for example, 27191 + ... + 27633.

It is an arithmetic number, because the mean of its divisors is an integer number (559440).

Almost surely, 2^12143516 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12143516, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13426560).

12143516 is an abundant number, since it is smaller than the sum of its proper divisors (14709604).

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

12143516 is a wasteful number, since it uses less digits than its factorization.

12143516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 554 (or 552 counting only the distinct ones).

The product of its digits is 720, while the sum is 23.

The square root of 12143516 is about 3484.7547976866. The cubic root of 12143516 is about 229.8519273765.

Adding to 12143516 its reverse (61534121), we get a palindrome (73677637).

The spelling of 12143516 in words is "twelve million, one hundred forty-three thousand, five hundred sixteen".