12143404 has 48 divisors (see below), whose sum is σ = 26571328. Its totient is φ = 4727808.

The previous prime is 12143387. The next prime is 12143407. The reversal of 12143404 is 40434121.

12143404 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (12143407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26344 + ... + 26800.

Almost surely, 2^12143404 is an apocalyptic number.

12143404 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12143404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13285664).

12143404 is an abundant number, since it is smaller than the sum of its proper divisors (14427924).

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

12143404 is a wasteful number, since it uses less digits than its factorization.

12143404 is an evil number, because the sum of its binary digits is even.

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

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 12143404 is about 3484.7387276523. The cubic root of 12143404 is about 229.8512207307.

Adding to 12143404 its reverse (40434121), we get a palindrome (52577525).

The spelling of 12143404 in words is "twelve million, one hundred forty-three thousand, four hundred four".