421016733 has 6 divisors (see below), whose sum is σ = 608135294. Its totient is φ = 280677816.

The previous prime is 421016707. The next prime is 421016749. The reversal of 421016733 is 337610124.

It can be written as a sum of positive squares in only one way, i.e., 299532249 + 121484484 = 17307^2 + 11022^2 .

It is not a de Polignac number, because 421016733 - 2⁹ = 421016221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 421016697 and 421016706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421016333) 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 5 ways as a sum of consecutive naturals, for example, 23389810 + ... + 23389827.

Almost surely, 2^421016733 is an apocalyptic number.

It is an amenable number.

421016733 is a deficient number, since it is larger than the sum of its proper divisors (187118561).

421016733 is a wasteful number, since it uses less digits than its factorization.

421016733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46779643 (or 46779640 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 421016733 is about 20518.6922828917. The cubic root of 421016733 is about 749.4910520408.

Adding to 421016733 its reverse (337610124), we get a palindrome (758626857).

The spelling of 421016733 in words is "four hundred twenty-one million, sixteen thousand, seven hundred thirty-three".