243233124420 has 384 divisors, whose sum is σ = 843544461312. Its totient is φ = 51550617600.

The previous prime is 243233124413. The next prime is 243233124439. The reversal of 243233124420 is 24421332342.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 12491332 + ... + 12510788.

It is an arithmetic number, because the mean of its divisors is an integer number (2196730368).

Almost surely, 2^243233124420 is an apocalyptic number.

243233124420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 243233124420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (421772230656).

243233124420 is an abundant number, since it is smaller than the sum of its proper divisors (600311336892).

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

243233124420 is a wasteful number, since it uses less digits than its factorization.

243233124420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19571 (or 19569 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 30.

Adding to 243233124420 its reverse (24421332342), we get a palindrome (267654456762).

It can be divided in two parts, 243233 and 124420, that added together give a triangular number (367653 = T₈₅₇).

The spelling of 243233124420 in words is "two hundred forty-three billion, two hundred thirty-three million, one hundred twenty-four thousand, four hundred twenty".