421554536 has 32 divisors (see below), whose sum is σ = 854283360. Its totient is φ = 193862592.

The previous prime is 421554503. The next prime is 421554541. The reversal of 421554536 is 635455124.

It is a junction number, because it is equal to n+sod(n) for n = 421554496 and 421554505.

It is an unprimeable number.

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, 22271 + ... + 36593.

It is an arithmetic number, because the mean of its divisors is an integer number (26696355).

Almost surely, 2^421554536 is an apocalyptic number.

It is an amenable number.

421554536 is an abundant number, since it is smaller than the sum of its proper divisors (432728824).

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

421554536 is a wasteful number, since it uses less digits than its factorization.

421554536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14625 (or 14621 counting only the distinct ones).

The product of its digits is 72000, while the sum is 35.

The square root of 421554536 is about 20531.7932972256. The cubic root of 421554536 is about 749.8100473021.

The spelling of 421554536 in words is "four hundred twenty-one million, five hundred fifty-four thousand, five hundred thirty-six".