243120454441 has 8 divisors (see below), whose sum is σ = 249800257544. Its totient is φ = 236446387200.

The previous prime is 243120454427. The next prime is 243120454457. The reversal of 243120454441 is 144454021342.

It can be written as a sum of positive squares in 4 ways, for example, as 15820356841 + 227300097600 = 125779^2 + 476760^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243120454441 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 243120454397 and 243120454406.

It is not an unprimeable number, because it can be changed into a prime (243120454141) 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, 1347960 + ... + 1517641.

It is an arithmetic number, because the mean of its divisors is an integer number (31225032193).

Almost surely, 2^243120454441 is an apocalyptic number.

It is an amenable number.

243120454441 is a deficient number, since it is larger than the sum of its proper divisors (6679803103).

243120454441 is a wasteful number, since it uses less digits than its factorization.

243120454441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2867931.

The product of its (nonzero) digits is 61440, while the sum is 34.

Adding to 243120454441 its reverse (144454021342), we get a palindrome (387574475783).

The spelling of 243120454441 in words is "two hundred forty-three billion, one hundred twenty million, four hundred fifty-four thousand, four hundred forty-one".