421580438 has 8 divisors (see below), whose sum is σ = 632859888. Its totient is φ = 210627144.

The previous prime is 421580407. The next prime is 421580443. The reversal of 421580438 is 834085124.

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

It is a junction number, because it is equal to n+sod(n) for n = 421580398 and 421580407.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 78281 + ... + 83492.

It is an arithmetic number, because the mean of its divisors is an integer number (79107486).

Almost surely, 2^421580438 is an apocalyptic number.

421580438 is a deficient number, since it is larger than the sum of its proper divisors (211279450).

421580438 is a wasteful number, since it uses less digits than its factorization.

421580438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163078.

The product of its (nonzero) digits is 30720, while the sum is 35.

The square root of 421580438 is about 20532.4240653655. The cubic root of 421580438 is about 749.8254040989.

The spelling of 421580438 in words is "four hundred twenty-one million, five hundred eighty thousand, four hundred thirty-eight".