12143040 has 224 divisors, whose sum is σ = 47792640. Its totient is φ = 2543616.

The previous prime is 12143023. The next prime is 12143063. The reversal of 12143040 is 4034121.

It is a tau number, because it is divible by the number of its divisors (224).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 87291 + ... + 87429.

It is an arithmetic number, because the mean of its divisors is an integer number (213360).

Almost surely, 2^12143040 is an apocalyptic number.

12143040 is a gapful number since it is divisible by the number (10) 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 12143040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23896320).

12143040 is an abundant number, since it is smaller than the sum of its proper divisors (35649600).

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

12143040 is a wasteful number, since it uses less digits than its factorization.

12143040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179 (or 169 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 12143040 is about 3484.6864995290. The cubic root of 12143040 is about 229.8489241017.

Adding to 12143040 its reverse (4034121), we get a palindrome (16177161).

The spelling of 12143040 in words is "twelve million, one hundred forty-three thousand, forty".