4020541 has 4 divisors (see below), whose sum is σ = 4594912. Its totient is φ = 3446172.

The previous prime is 4020529. The next prime is 4020563. The reversal of 4020541 is 1450204.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4020541 is a prime.

It is a super-4 number, since 4×4020541⁴ (a number of 28 digits) contains 4444 as substring.

4020541 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4020641) 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, 287175 + ... + 287188.

It is an arithmetic number, because the mean of its divisors is an integer number (1148728).

Almost surely, 2^4020541 is an apocalyptic number.

It is an amenable number.

4020541 is a deficient number, since it is larger than the sum of its proper divisors (574371).

4020541 is an equidigital number, since it uses as much as digits as its factorization.

4020541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 574370.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 4020541 is about 2005.1286741753. The cubic root of 4020541 is about 159.0113647718.

Adding to 4020541 its reverse (1450204), we get a palindrome (5470745).

The spelling of 4020541 in words is "four million, twenty thousand, five hundred forty-one".