243400121104 has 40 divisors (see below), whose sum is σ = 539010600320. Its totient is φ = 104304043008.

The previous prime is 243400121051. The next prime is 243400121117. The reversal of 243400121104 is 401121004342.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1092352 + ... + 1296160.

It is an arithmetic number, because the mean of its divisors is an integer number (13475265008).

Almost surely, 2^243400121104 is an apocalyptic number.

It is an amenable number.

243400121104 is an abundant number, since it is smaller than the sum of its proper divisors (295610479216).

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

243400121104 is a wasteful number, since it uses less digits than its factorization.

243400121104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214487 (or 214481 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 243400121104 its reverse (401121004342), we get a palindrome (644521125446).

The spelling of 243400121104 in words is "two hundred forty-three billion, four hundred million, one hundred twenty-one thousand, one hundred four".