421300203243 has 32 divisors (see below), whose sum is σ = 587277250560. Its totient is φ = 268142249760.

The previous prime is 421300203193. The next prime is 421300203257. The reversal of 421300203243 is 342302003124.

It is not a de Polignac number, because 421300203243 - 2¹² = 421300199147 is a prime.

It is a super-2 number, since 2×421300203243² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (421300203943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 99290880 + ... + 99295122.

It is an arithmetic number, because the mean of its divisors is an integer number (18352414080).

Almost surely, 2^421300203243 is an apocalyptic number.

421300203243 is a deficient number, since it is larger than the sum of its proper divisors (165977047317).

421300203243 is a wasteful number, since it uses less digits than its factorization.

421300203243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6679.

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 421300203243 its reverse (342302003124), we get a palindrome (763602206367).

The spelling of 421300203243 in words is "four hundred twenty-one billion, three hundred million, two hundred three thousand, two hundred forty-three".