4143440 has 80 divisors (see below), whose sum is σ = 11308800. Its totient is φ = 1411200.

The previous prime is 4143421. The next prime is 4143449. The reversal of 4143440 is 443414.

4143440 is digitally balanced in base 8, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (20).

4143440 is strictly pandigital in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4143449) 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, 27365 + ... + 27515.

It is an arithmetic number, because the mean of its divisors is an integer number (141360).

Almost surely, 2^4143440 is an apocalyptic number.

4143440 is a gapful number since it is divisible by the number (40) 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 4143440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5654400).

4143440 is an abundant number, since it is smaller than the sum of its proper divisors (7165360).

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

4143440 is a wasteful number, since it uses less digits than its factorization.

4143440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185 (or 165 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 4143440 is about 2035.5441532917. The cubic root of 4143440 is about 160.6153387882.

Adding to 4143440 its reverse (443414), we get a palindrome (4586854).

The spelling of 4143440 in words is "four million, one hundred forty-three thousand, four hundred forty".