421563072 has 84 divisors (see below), whose sum is σ = 1297518360. Its totient is φ = 120443904.

The previous prime is 421563071. The next prime is 421563091. The reversal of 421563072 is 270365124.

It is a tau number, because it is divible by the number of its divisors (84).

It is not an unprimeable number, because it can be changed into a prime (421563071) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12997 + ... + 31812.

Almost surely, 2^421563072 is an apocalyptic number.

421563072 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

421563072 is an abundant number, since it is smaller than the sum of its proper divisors (875955288).

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

421563072 is a wasteful number, since it uses less digits than its factorization.

421563072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44838 (or 44821 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 421563072 is about 20532.0011689070. The cubic root of 421563072 is about 749.8151082016.

The spelling of 421563072 in words is "four hundred twenty-one million, five hundred sixty-three thousand, seventy-two".