4020041 has 8 divisors (see below), whose sum is σ = 4305960. Its totient is φ = 3739648.

The previous prime is 4020031. The next prime is 4020119. The reversal of 4020041 is 1400204.

It can be written as a sum of positive squares in 4 ways, for example, as 765625 + 3254416 = 875^2 + 1804^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4020041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4020011) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 185 + ... + 2841.

It is an arithmetic number, because the mean of its divisors is an integer number (538245).

Almost surely, 2^4020041 is an apocalyptic number.

It is an amenable number.

4020041 is a deficient number, since it is larger than the sum of its proper divisors (285919).

4020041 is a wasteful number, since it uses less digits than its factorization.

4020041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2763.

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 4020041 is about 2005.0039900210. The cubic root of 4020041 is about 159.0047728747.

Subtracting from 4020041 its sum of digits (11), we obtain a triangular number (4020030 = T₂₈₃₅).

Adding to 4020041 its reverse (1400204), we get a palindrome (5420245).

The spelling of 4020041 in words is "four million, twenty thousand, forty-one".