421986203 has 4 divisors (see below), whose sum is σ = 422029920. Its totient is φ = 421942488.

The previous prime is 421986179. The next prime is 421986241. The reversal of 421986203 is 302689124.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 421986203 - 2¹⁸ = 421724059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421986263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 275 + ... + 29052.

It is an arithmetic number, because the mean of its divisors is an integer number (105507480).

Almost surely, 2^421986203 is an apocalyptic number.

421986203 is a deficient number, since it is larger than the sum of its proper divisors (43717).

421986203 is a wasteful number, since it uses less digits than its factorization.

421986203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43716.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 421986203 is about 20542.3027677035. The cubic root of 421986203 is about 750.0658922848.

The spelling of 421986203 in words is "four hundred twenty-one million, nine hundred eighty-six thousand, two hundred three".