421450500 has 48 divisors (see below), whose sum is σ = 1227268224. Its totient is φ = 112386400.

The previous prime is 421450499. The next prime is 421450501. The reversal of 421450500 is 5054124.

It is an interprime number because it is at equal distance from previous prime (421450499) and next prime (421450501).

It is not an unprimeable number, because it can be changed into a prime (421450501) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 138984 + ... + 141983.

It is an arithmetic number, because the mean of its divisors is an integer number (25568088).

Almost surely, 2^421450500 is an apocalyptic number.

It is an amenable number.

421450500 is an abundant number, since it is smaller than the sum of its proper divisors (805817724).

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

421450500 is a wasteful number, since it uses less digits than its factorization.

421450500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280989 (or 280977 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 421450500 is about 20529.2596067174. The cubic root of 421450500 is about 749.7483600237.

The spelling of 421450500 in words is "four hundred twenty-one million, four hundred fifty thousand, five hundred".