1204123240443 has 16 divisors (see below), whose sum is σ = 1664471281536. Its totient is φ = 773733802560.

The previous prime is 1204123240417. The next prime is 1204123240483. The reversal of 1204123240443 is 3440423214021.

It is not a de Polignac number, because 1204123240443 - 2⁹ = 1204123239931 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1204123240443.

It is not an unprimeable number, because it can be changed into a prime (1204123240483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58963405 + ... + 58983822.

It is an arithmetic number, because the mean of its divisors is an integer number (104029455096).

Almost surely, 2^{1204123240443} is an apocalyptic number.

1204123240443 is a deficient number, since it is larger than the sum of its proper divisors (460348041093).

1204123240443 is a wasteful number, since it uses less digits than its factorization.

1204123240443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117947354.

The product of its (nonzero) digits is 18432, while the sum is 30.

Adding to 1204123240443 its reverse (3440423214021), we get a palindrome (4644546454464).

The spelling of 1204123240443 in words is "one trillion, two hundred four billion, one hundred twenty-three million, two hundred forty thousand, four hundred forty-three".