243121244104 has 16 divisors (see below), whose sum is σ = 471571379100. Its totient is φ = 117368876352.

The previous prime is 243121244099. The next prime is 243121244123. The reversal of 243121244104 is 401442121342.

It can be written as a sum of positive squares in 2 ways, for example, as 206659341604 + 36461902500 = 454598^2 + 190950^2 .

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, 523967967 + ... + 523968430.

Almost surely, 2^243121244104 is an apocalyptic number.

It is an amenable number.

243121244104 is a deficient number, since it is larger than the sum of its proper divisors (228450134996).

243121244104 is a wasteful number, since it uses less digits than its factorization.

243121244104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1047936432 (or 1047936428 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 243121244104 its reverse (401442121342), we get a palindrome (644563365446).

The spelling of 243121244104 in words is "two hundred forty-three billion, one hundred twenty-one million, two hundred forty-four thousand, one hundred four".