420132565 has 4 divisors (see below), whose sum is σ = 504159084. Its totient is φ = 336106048.

The previous prime is 420132563. The next prime is 420132607. The reversal of 420132565 is 565231024.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 81830116 + 338302449 = 9046^2 + 18393^2 .

It is a cyclic number.

It is not a de Polignac number, because 420132565 - 2¹ = 420132563 is a prime.

It is a super-2 number, since 2×420132565² = 353022744346958450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420132563) 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, 42013252 + ... + 42013261.

It is an arithmetic number, because the mean of its divisors is an integer number (126039771).

Almost surely, 2^420132565 is an apocalyptic number.

It is an amenable number.

420132565 is a deficient number, since it is larger than the sum of its proper divisors (84026519).

420132565 is an equidigital number, since it uses as much as digits as its factorization.

420132565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84026518.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 420132565 is about 20497.1355315810. The cubic root of 420132565 is about 748.9660210978.

Adding to 420132565 its reverse (565231024), we get a palindrome (985363589).

The spelling of 420132565 in words is "four hundred twenty million, one hundred thirty-two thousand, five hundred sixty-five".