420420565 has 8 divisors (see below), whose sum is σ = 526439808. Its totient is φ = 321713040.

The previous prime is 420420551. The next prime is 420420577. The reversal of 420420565 is 565024024.

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

It is not a de Polignac number, because 420420565 - 2⁹ = 420420053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1827801 + ... + 1828030.

It is an arithmetic number, because the mean of its divisors is an integer number (65804976).

Almost surely, 2^420420565 is an apocalyptic number.

It is an amenable number.

420420565 is a deficient number, since it is larger than the sum of its proper divisors (106019243).

420420565 is a wasteful number, since it uses less digits than its factorization.

420420565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3655859.

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 420420565 is about 20504.1596999243. The cubic root of 420420565 is about 749.1371202246.

Adding to 420420565 its reverse (565024024), we get a palindrome (985444589).

The spelling of 420420565 in words is "four hundred twenty million, four hundred twenty thousand, five hundred sixty-five".