1200123300144 has 40 divisors (see below), whose sum is σ = 3111351722352. Its totient is φ = 398617461760.

The previous prime is 1200123300119. The next prime is 1200123300151. The reversal of 1200123300144 is 4410033210021.

It is a self number, because there is not a number n which added to its sum of digits gives 1200123300144.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44475069 + ... + 44502044.

Almost surely, 2^{1200123300144} is an apocalyptic number.

It is an amenable number.

1200123300144 is an abundant number, since it is smaller than the sum of its proper divisors (1911228422208).

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

1200123300144 is a wasteful number, since it uses less digits than its factorization.

1200123300144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88977405 (or 88977399 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 1200123300144 its reverse (4410033210021), we get a palindrome (5610156510165).

The spelling of 1200123300144 in words is "one trillion, two hundred billion, one hundred twenty-three million, three hundred thousand, one hundred forty-four".