423420565 has 8 divisors (see below), whose sum is σ = 508429368. Its totient is φ = 338520000.

The previous prime is 423420541. The next prime is 423420589. The reversal of 423420565 is 565024324.

It is an interprime number because it is at equal distance from previous prime (423420541) and next prime (423420589).

It can be written as a sum of positive squares in 4 ways, for example, as 31618129 + 391802436 = 5623^2 + 19794^2 .

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

It is not a de Polignac number, because 423420565 - 2⁵ = 423420533 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, 18186 + ... + 34315.

It is an arithmetic number, because the mean of its divisors is an integer number (63553671).

Almost surely, 2^423420565 is an apocalyptic number.

It is an amenable number.

423420565 is a deficient number, since it is larger than the sum of its proper divisors (85008803).

423420565 is a wasteful number, since it uses less digits than its factorization.

423420565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54119.

The product of its (nonzero) digits is 28800, while the sum is 31.

The square root of 423420565 is about 20577.1855461334. The cubic root of 423420565 is about 750.9147741677.

Adding to 423420565 its reverse (565024324), we get a palindrome (988444889).

The spelling of 423420565 in words is "four hundred twenty-three million, four hundred twenty thousand, five hundred sixty-five".