202421163 has 8 divisors (see below), whose sum is σ = 308451328. Its totient is φ = 115669224.

The previous prime is 202421123. The next prime is 202421171. The reversal of 202421163 is 361124202.

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

It is not a de Polignac number, because 202421163 - 2⁶ = 202421099 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 9639103 = 202421163 / (2 + 0 + 2 + 4 + 2 + 1 + 1 + 6 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202421123) 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, 4819531 + ... + 4819572.

It is an arithmetic number, because the mean of its divisors is an integer number (38556416).

Almost surely, 2^202421163 is an apocalyptic number.

202421163 is a deficient number, since it is larger than the sum of its proper divisors (106030165).

202421163 is an equidigital number, since it uses as much as digits as its factorization.

202421163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9639113.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 202421163 is about 14227.4791512762. The cubic root of 202421163 is about 587.1539297601.

Adding to 202421163 its reverse (361124202), we get a palindrome (563545365).

The spelling of 202421163 in words is "two hundred two million, four hundred twenty-one thousand, one hundred sixty-three".