243420345441 has 48 divisors (see below), whose sum is σ = 433629356160. Its totient is φ = 128135831040.

The previous prime is 243420345439. The next prime is 243420345461. The reversal of 243420345441 is 144543024342.

243420345441 is a `hidden beast` number, since 2 + 4 + 3 + 4 + 203 + 4 + 5 + 441 = 666.

It is not a de Polignac number, because 243420345441 - 2¹ = 243420345439 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 243420345396 and 243420345405.

It is not an unprimeable number, because it can be changed into a prime (243420345431) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 99465 + ... + 704793.

It is an arithmetic number, because the mean of its divisors is an integer number (9033944920).

Almost surely, 2^243420345441 is an apocalyptic number.

243420345441 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

243420345441 is a deficient number, since it is larger than the sum of its proper divisors (190209010719).

243420345441 is a wasteful number, since it uses less digits than its factorization.

243420345441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605846 (or 605843 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 36.

Adding to 243420345441 its reverse (144543024342), we get a palindrome (387963369783).

The spelling of 243420345441 in words is "two hundred forty-three billion, four hundred twenty million, three hundred forty-five thousand, four hundred forty-one".