6420541 has 4 divisors (see below), whose sum is σ = 6439392. Its totient is φ = 6401692.

The previous prime is 6420523. The next prime is 6420587. The reversal of 6420541 is 1450246.

6420541 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 not a de Polignac number, because 6420541 - 2⁷ = 6420413 is a prime.

It is a Duffinian number.

6420541 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6420511) 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 3 ways as a sum of consecutive naturals, for example, 8905 + ... + 9598.

It is an arithmetic number, because the mean of its divisors is an integer number (1609848).

Almost surely, 2^6420541 is an apocalyptic number.

It is an amenable number.

6420541 is a deficient number, since it is larger than the sum of its proper divisors (18851).

6420541 is a wasteful number, since it uses less digits than its factorization.

6420541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18850.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 6420541 is about 2533.8786474494. The cubic root of 6420541 is about 185.8619722106.

Adding to 6420541 its reverse (1450246), we get a palindrome (7870787).

It can be divided in two parts, 64205 and 41, that added together give a palindrome (64246).

The spelling of 6420541 in words is "six million, four hundred twenty thousand, five hundred forty-one".