243052054121 has 8 divisors (see below), whose sum is σ = 249029951688. Its totient is φ = 237076528000.

The previous prime is 243052054073. The next prime is 243052054139. The reversal of 243052054121 is 121450250342.

It can be written as a sum of positive squares in 4 ways, for example, as 86398372096 + 156653682025 = 293936^2 + 395795^2 .

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-243052054121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243052054181) 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, 384470 + ... + 796191.

It is an arithmetic number, because the mean of its divisors is an integer number (31128743961).

Almost surely, 2^243052054121 is an apocalyptic number.

It is an amenable number.

243052054121 is a deficient number, since it is larger than the sum of its proper divisors (5977897567).

243052054121 is a wasteful number, since it uses less digits than its factorization.

243052054121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1185723.

The product of its (nonzero) digits is 9600, while the sum is 29.

The spelling of 243052054121 in words is "two hundred forty-three billion, fifty-two million, fifty-four thousand, one hundred twenty-one".