421826673 has 8 divisors (see below), whose sum is σ = 562532128. Its totient is φ = 281169504.

The previous prime is 421826659. The next prime is 421826687. The reversal of 421826673 is 376628124.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (421826659) and next prime (421826687).

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

It is not a de Polignac number, because 421826673 - 2¹⁸ = 421564529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421026673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22290 + ... + 36612.

It is an arithmetic number, because the mean of its divisors is an integer number (70316516).

Almost surely, 2^421826673 is an apocalyptic number.

It is an amenable number.

421826673 is a deficient number, since it is larger than the sum of its proper divisors (140705455).

421826673 is a wasteful number, since it uses less digits than its factorization.

421826673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24143.

The product of its digits is 96768, while the sum is 39.

The square root of 421826673 is about 20538.4194377269. The cubic root of 421826673 is about 749.9713606842.

The spelling of 421826673 in words is "four hundred twenty-one million, eight hundred twenty-six thousand, six hundred seventy-three".