420302541 has 4 divisors (see below), whose sum is σ = 560403392. Its totient is φ = 280201692.

The previous prime is 420302513. The next prime is 420302549. The reversal of 420302541 is 145203024.

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 not a de Polignac number, because 420302541 - 2⁷ = 420302413 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 (420302549) 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, 70050421 + ... + 70050426.

It is an arithmetic number, because the mean of its divisors is an integer number (140100848).

Almost surely, 2^420302541 is an apocalyptic number.

It is an amenable number.

420302541 is a deficient number, since it is larger than the sum of its proper divisors (140100851).

420302541 is a wasteful number, since it uses less digits than its factorization.

420302541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140100850.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 420302541 is about 20501.2814477535. The cubic root of 420302541 is about 749.0670123043.

Adding to 420302541 its reverse (145203024), we get a palindrome (565505565).

The spelling of 420302541 in words is "four hundred twenty million, three hundred two thousand, five hundred forty-one".