4081140 has 144 divisors (see below), whose sum is σ = 14676480. Its totient is φ = 898560.

The previous prime is 4081111. The next prime is 4081153. The reversal of 4081140 is 411804.

4081140 = 15² + 16² + ... + 230².

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 51621 + ... + 51699.

It is an arithmetic number, because the mean of its divisors is an integer number (101920).

Almost surely, 2^4081140 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 4081140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7338240).

4081140 is an abundant number, since it is smaller than the sum of its proper divisors (10595340).

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

4081140 is a wasteful number, since it uses less digits than its factorization.

4081140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142 (or 137 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 4081140 is about 2020.1831600130. The cubic root of 4081140 is about 159.8062759550.

Adding to 4081140 its reverse (411804), we get a palindrome (4492944).

The spelling of 4081140 in words is "four million, eighty-one thousand, one hundred forty".