420533863 has 8 divisors (see below), whose sum is σ = 448155648. Its totient is φ = 393690264.

The previous prime is 420533857. The next prime is 420533873. The reversal of 420533863 is 368335024.

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

It is not a de Polignac number, because 420533863 - 2¹⁷ = 420402791 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420533833) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 193431 + ... + 195592.

It is an arithmetic number, because the mean of its divisors is an integer number (56019456).

Almost surely, 2^420533863 is an apocalyptic number.

420533863 is a deficient number, since it is larger than the sum of its proper divisors (27621785).

420533863 is a wasteful number, since it uses less digits than its factorization.

420533863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389093.

The product of its (nonzero) digits is 51840, while the sum is 34.

The square root of 420533863 is about 20506.9223190609. The cubic root of 420533863 is about 749.2044084921.

Adding to 420533863 its reverse (368335024), we get a palindrome (788868887).

The spelling of 420533863 in words is "four hundred twenty million, five hundred thirty-three thousand, eight hundred sixty-three".