421333163 has 8 divisors (see below), whose sum is σ = 423259200. Its totient is φ = 419412168.

The previous prime is 421333127. The next prime is 421333169. The reversal of 421333163 is 361333124.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 421333163 - 2⁸ = 421332907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421333169) 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, 334028 + ... + 335286.

It is an arithmetic number, because the mean of its divisors is an integer number (52907400).

Almost surely, 2^421333163 is an apocalyptic number.

421333163 is a deficient number, since it is larger than the sum of its proper divisors (1926037).

421333163 is a wasteful number, since it uses less digits than its factorization.

421333163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2521.

The product of its digits is 3888, while the sum is 26.

The square root of 421333163 is about 20526.4016086600. The cubic root of 421333163 is about 749.6787738454.

Adding to 421333163 its reverse (361333124), we get a palindrome (782666287).

The spelling of 421333163 in words is "four hundred twenty-one million, three hundred thirty-three thousand, one hundred sixty-three".