243018420 has 48 divisors (see below), whose sum is σ = 681289728. Its totient is φ = 64725120.

The previous prime is 243018397. The next prime is 243018421. The reversal of 243018420 is 24810342.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243018421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59277 + ... + 63243.

It is an arithmetic number, because the mean of its divisors is an integer number (14193536).

Almost surely, 2^243018420 is an apocalyptic number.

243018420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243018420 is an abundant number, since it is smaller than the sum of its proper divisors (438271308).

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

243018420 is a wasteful number, since it uses less digits than its factorization.

243018420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5000 (or 4998 counting only the distinct ones).

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

The square root of 243018420 is about 15589.0480786994. The cubic root of 243018420 is about 624.0409140662.

Adding to 243018420 its reverse (24810342), we get a palindrome (267828762).

The spelling of 243018420 in words is "two hundred forty-three million, eighteen thousand, four hundred twenty".