4081424 has 20 divisors (see below), whose sum is σ = 8058636. Its totient is φ = 2001792.

The previous prime is 4081423. The next prime is 4081453. The reversal of 4081424 is 4241804.

It can be written as a sum of positive squares in 2 ways, for example, as 2999824 + 1081600 = 1732^2 + 1040^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 4081424.

It is not an unprimeable number, because it can be changed into a prime (4081421) 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, 1559 + ... + 3254.

Almost surely, 2^4081424 is an apocalyptic number.

It is an amenable number.

4081424 is a deficient number, since it is larger than the sum of its proper divisors (3977212).

4081424 is a wasteful number, since it uses less digits than its factorization.

4081424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4874 (or 4868 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 23.

The square root of 4081424 is about 2020.2534494464. The cubic root of 4081424 is about 159.8099827567.

Subtracting from 4081424 its product of nonzero digits (1024), we obtain a square (4080400 = 2020²).

The spelling of 4081424 in words is "four million, eighty-one thousand, four hundred twenty-four".