243016420 has 24 divisors (see below), whose sum is σ = 510633144. Its totient is φ = 97149696.

The previous prime is 243016393. The next prime is 243016421. The reversal of 243016420 is 24610342.

It is a happy number.

243016420 is nontrivially palindromic in base 6.

243016420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 7884864 + 235131556 = 2808^2 + 15334^2 .

It is a junction number, because it is equal to n+sod(n) for n = 243016391 and 243016400.

It is not an unprimeable number, because it can be changed into a prime (243016421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55014 + ... + 59266.

It is an arithmetic number, because the mean of its divisors is an integer number (21276381).

Almost surely, 2^243016420 is an apocalyptic number.

243016420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243016420 is an abundant number, since it is smaller than the sum of its proper divisors (267616724).

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

243016420 is a wasteful number, since it uses less digits than its factorization.

243016420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7119 (or 7117 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 243016420 is about 15588.9839309687. The cubic root of 243016420 is about 624.0392021448.

Adding to 243016420 its reverse (24610342), we get a palindrome (267626762).

The spelling of 243016420 in words is "two hundred forty-three million, sixteen thousand, four hundred twenty".