421986206 has 8 divisors (see below), whose sum is σ = 670213440. Its totient is φ = 198581728.

The previous prime is 421986179. The next prime is 421986241. The reversal of 421986206 is 602689124.

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

It is a self number, because there is not a number n which added to its sum of digits gives 421986206.

It is a congruent number.

It is an unprimeable number.

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, 6205646 + ... + 6205713.

It is an arithmetic number, because the mean of its divisors is an integer number (83776680).

Almost surely, 2^421986206 is an apocalyptic number.

421986206 is a deficient number, since it is larger than the sum of its proper divisors (248227234).

421986206 is a wasteful number, since it uses less digits than its factorization.

421986206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12411378.

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 421986206 is about 20542.3028407236. The cubic root of 421986206 is about 750.0658940623.

The spelling of 421986206 in words is "four hundred twenty-one million, nine hundred eighty-six thousand, two hundred six".