420420441 has 24 divisors (see below), whose sum is σ = 658199520. Its totient is φ = 237986112.

The previous prime is 420420439. The next prime is 420420443. The reversal of 420420441 is 144024024.

It is an interprime number because it is at equal distance from previous prime (420420439) and next prime (420420443).

It is not a de Polignac number, because 420420441 - 2¹ = 420420439 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (420420443) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2365 + ... + 29093.

It is an arithmetic number, because the mean of its divisors is an integer number (27424980).

Almost surely, 2^420420441 is an apocalyptic number.

It is an amenable number.

420420441 is a deficient number, since it is larger than the sum of its proper divisors (237779079).

420420441 is a wasteful number, since it uses less digits than its factorization.

420420441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26853 (or 26846 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 420420441 is about 20504.1566761474. The cubic root of 420420441 is about 749.1370465738.

Adding to 420420441 its reverse (144024024), we get a palindrome (564444465).

The spelling of 420420441 in words is "four hundred twenty million, four hundred twenty thousand, four hundred forty-one".