243081420 has 48 divisors (see below), whose sum is σ = 689256960. Its totient is φ = 63999936.

The previous prime is 243081409. The next prime is 243081467. The reversal of 243081420 is 24180342.

243081420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20902 + ... + 30381.

It is an arithmetic number, because the mean of its divisors is an integer number (14359520).

Almost surely, 2^243081420 is an apocalyptic number.

243081420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243081420 is an abundant number, since it is smaller than the sum of its proper divisors (446175540).

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

243081420 is a wasteful number, since it uses less digits than its factorization.

243081420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51374 (or 51372 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 243081420 is about 15591.0685971167. The cubic root of 243081420 is about 624.0948347810.

The spelling of 243081420 in words is "two hundred forty-three million, eighty-one thousand, four hundred twenty".