243120054 has 32 divisors (see below), whose sum is σ = 493637760. Its totient is φ = 79814592.

The previous prime is 243120047. The next prime is 243120083. The reversal of 243120054 is 450021342.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 243120054.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 163197 + ... + 164679.

It is an arithmetic number, because the mean of its divisors is an integer number (15426180).

Almost surely, 2^243120054 is an apocalyptic number.

243120054 is an abundant number, since it is smaller than the sum of its proper divisors (250517706).

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

243120054 is a wasteful number, since it uses less digits than its factorization.

243120054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1884.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 243120054 is about 15592.3075264696. The cubic root of 243120054 is about 624.1278964092.

Adding to 243120054 its reverse (450021342), we get a palindrome (693141396).

The spelling of 243120054 in words is "two hundred forty-three million, one hundred twenty thousand, fifty-four".