243424131420 has 96 divisors (see below), whose sum is σ = 694915200000. Its totient is φ = 63645454080.

The previous prime is 243424131409. The next prime is 243424131437. The reversal of 243424131420 is 24131424342.

243424131420 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4843581 + ... + 4893579.

It is an arithmetic number, because the mean of its divisors is an integer number (7238700000).

Almost surely, 2^243424131420 is an apocalyptic number.

243424131420 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 243424131420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (347457600000).

243424131420 is an abundant number, since it is smaller than the sum of its proper divisors (451491068580).

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

243424131420 is a wasteful number, since it uses less digits than its factorization.

243424131420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51595 (or 51593 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 30.

Adding to 243424131420 its reverse (24131424342), we get a palindrome (267555555762).

The spelling of 243424131420 in words is "two hundred forty-three billion, four hundred twenty-four million, one hundred thirty-one thousand, four hundred twenty".