4005041 has 4 divisors (see below), whose sum is σ = 4009332. Its totient is φ = 4000752.

The previous prime is 4005019. The next prime is 4005049. The reversal of 4005041 is 1405004.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 3984016 + 21025 = 1996^2 + 145^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4005041 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4005049) 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, 86 + ... + 2831.

It is an arithmetic number, because the mean of its divisors is an integer number (1002333).

Almost surely, 2^4005041 is an apocalyptic number.

It is an amenable number.

4005041 is a deficient number, since it is larger than the sum of its proper divisors (4291).

4005041 is a wasteful number, since it uses less digits than its factorization.

4005041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4290.

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 4005041 is about 2001.2598531925. The cubic root of 4005041 is about 158.8067612761.

It can be divided in two parts, 400 and 5041, that multiplied together give a square (2016400 = 1420²).

The spelling of 4005041 in words is "four million, five thousand, forty-one".