421820683 has 8 divisors (see below), whose sum is σ = 434203200. Its totient is φ = 409489920.

The previous prime is 421820657. The next prime is 421820687. The reversal of 421820683 is 386028124.

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

It is a cyclic number.

It is not a de Polignac number, because 421820683 - 2²¹ = 419723531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421820687) 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, 3918 + ... + 29308.

It is an arithmetic number, because the mean of its divisors is an integer number (54275400).

Almost surely, 2^421820683 is an apocalyptic number.

421820683 is a deficient number, since it is larger than the sum of its proper divisors (12382517).

421820683 is a wasteful number, since it uses less digits than its factorization.

421820683 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25877.

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 421820683 is about 20538.2736129403. The cubic root of 421820683 is about 749.9678107666.

The spelling of 421820683 in words is "four hundred twenty-one million, eight hundred twenty thousand, six hundred eighty-three".