421550424 has 24 divisors (see below), whose sum is σ = 1141699260. Its totient is φ = 140516784.

The previous prime is 421550401. The next prime is 421550429. The reversal of 421550424 is 424055124.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421550429) 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 5 ways as a sum of consecutive naturals, for example, 2927362 + ... + 2927505.

Almost surely, 2^421550424 is an apocalyptic number.

It is an amenable number.

421550424 is an abundant number, since it is smaller than the sum of its proper divisors (720148836).

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

421550424 is a wasteful number, since it uses less digits than its factorization.

421550424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5854879 (or 5854872 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The square root of 421550424 is about 20531.6931596008. The cubic root of 421550424 is about 749.8076093187.

The spelling of 421550424 in words is "four hundred twenty-one million, five hundred fifty thousand, four hundred twenty-four".