243421022420 has 96 divisors (see below), whose sum is σ = 519937729920. Its totient is φ = 95718318080.

The previous prime is 243421022393. The next prime is 243421022443. The reversal of 243421022420 is 24220124342.

It is a self number, because there is not a number n which added to its sum of digits gives 243421022420.

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, 276300380 + ... + 276301260.

It is an arithmetic number, because the mean of its divisors is an integer number (5416018020).

Almost surely, 2^243421022420 is an apocalyptic number.

243421022420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243421022420 is an abundant number, since it is smaller than the sum of its proper divisors (276516707500).

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

243421022420 is a wasteful number, since it uses less digits than its factorization.

243421022420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1865 (or 1863 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 243421022420 its reverse (24220124342), we get a palindrome (267641146762).

The spelling of 243421022420 in words is "two hundred forty-three billion, four hundred twenty-one million, twenty-two thousand, four hundred twenty".