1121242404123 has 16 divisors (see below), whose sum is σ = 1665805537440. Its totient is φ = 745377380352.

The previous prime is 1121242404077. The next prime is 1121242404137. The reversal of 1121242404123 is 3214042421211.

1121242404123 is a `hidden beast` number, since 1 + 1 + 2 + 1 + 2 + 4 + 240 + 412 + 3 = 666.

It is not a de Polignac number, because 1121242404123 - 2⁶ = 1121242404059 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1121242404143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58811286 + ... + 58830347.

It is an arithmetic number, because the mean of its divisors is an integer number (104112846090).

Almost surely, 2^{1121242404123} is an apocalyptic number.

1121242404123 is a deficient number, since it is larger than the sum of its proper divisors (544563133317).

1121242404123 is a wasteful number, since it uses less digits than its factorization.

1121242404123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117641995 (or 117641989 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

Adding to 1121242404123 its reverse (3214042421211), we get a palindrome (4335284825334).

The spelling of 1121242404123 in words is "one trillion, one hundred twenty-one billion, two hundred forty-two million, four hundred four thousand, one hundred twenty-three".