421580436 has 24 divisors (see below), whose sum is σ = 1035461280. Its totient is φ = 133130592.

The previous prime is 421580407. The next prime is 421580443. The reversal of 421580436 is 634085124.

It is a junction number, because it is equal to n+sod(n) for n = 421580397 and 421580406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 924291 + ... + 924746.

It is an arithmetic number, because the mean of its divisors is an integer number (43144220).

Almost surely, 2^421580436 is an apocalyptic number.

It is an amenable number.

421580436 is an abundant number, since it is smaller than the sum of its proper divisors (613880844).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

421580436 is a wasteful number, since it uses less digits than its factorization.

421580436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1849063 (or 1849061 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 421580436 is about 20532.4240166620. The cubic root of 421580436 is about 749.8254029132.

The spelling of 421580436 in words is "four hundred twenty-one million, five hundred eighty thousand, four hundred thirty-six".