243123420112 has 20 divisors (see below), whose sum is σ = 474051960196. Its totient is φ = 120787430400.

The previous prime is 243123420103. The next prime is 243123420131. The reversal of 243123420112 is 211024321342.

It can be written as a sum of positive squares in 2 ways, for example, as 134853466176 + 108269953936 = 367224^2 + 329044^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48389889 + ... + 48394912.

Almost surely, 2^243123420112 is an apocalyptic number.

It is an amenable number.

243123420112 is a deficient number, since it is larger than the sum of its proper divisors (230928540084).

243123420112 is a wasteful number, since it uses less digits than its factorization.

243123420112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96784966 (or 96784960 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 243123420112 its reverse (211024321342), we get a palindrome (454147741454).

The spelling of 243123420112 in words is "two hundred forty-three billion, one hundred twenty-three million, four hundred twenty thousand, one hundred twelve".