12143104 has 40 divisors (see below), whose sum is σ = 24957108. Its totient is φ = 5898240.

The previous prime is 12143099. The next prime is 12143107. The reversal of 12143104 is 40134121.

It can be written as a sum of positive squares in 2 ways, for example, as 9734400 + 2408704 = 3120^2 + 1552^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (12143107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18624 + ... + 19264.

Almost surely, 2^12143104 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 12143104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12478554).

12143104 is an abundant number, since it is smaller than the sum of its proper divisors (12814004).

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

12143104 is an frugal number, since it uses more digits than its factorization.

12143104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696 (or 680 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 12143104 is about 3484.6956825525. The cubic root of 12143104 is about 229.8493279079.

Adding to 12143104 its reverse (40134121), we get a palindrome (52277225).

The spelling of 12143104 in words is "twelve million, one hundred forty-three thousand, one hundred four".