420565835 has 8 divisors (see below), whose sum is σ = 505220976. Its totient is φ = 336091360.

The previous prime is 420565829. The next prime is 420565837. The reversal of 420565835 is 538565024.

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

It is not a de Polignac number, because 420565835 - 2⁴ = 420565819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420565837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39989 + ... + 49398.

It is an arithmetic number, because the mean of its divisors is an integer number (63152622).

Almost surely, 2^420565835 is an apocalyptic number.

420565835 is a deficient number, since it is larger than the sum of its proper divisors (84655141).

420565835 is an equidigital number, since it uses as much as digits as its factorization.

420565835 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90333.

The product of its (nonzero) digits is 144000, while the sum is 38.

The square root of 420565835 is about 20507.7018458919. The cubic root of 420565835 is about 749.2233946416.

The spelling of 420565835 in words is "four hundred twenty million, five hundred sixty-five thousand, eight hundred thirty-five".