1044420423345 has 72 divisors (see below), whose sum is σ = 2002005922176. Its totient is φ = 503236116864.

The previous prime is 1044420423331. The next prime is 1044420423391. The reversal of 1044420423345 is 5433240244401.

1044420423345 is a `hidden beast` number, since 1 + 0 + 444 + 204 + 2 + 3 + 3 + 4 + 5 = 666.

It is not a de Polignac number, because 1044420423345 - 2⁸ = 1044420423089 is a prime.

It is an unprimeable number.

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 71 ways as a sum of consecutive naturals, for example, 1103559 + ... + 1818428.

It is an arithmetic number, because the mean of its divisors is an integer number (27805637808).

Almost surely, 2^{1044420423345} is an apocalyptic number.

1044420423345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1044420423345 is a deficient number, since it is larger than the sum of its proper divisors (957585498831).

1044420423345 is a wasteful number, since it uses less digits than its factorization.

1044420423345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2922071 (or 2922055 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 36.

Adding to 1044420423345 its reverse (5433240244401), we get a palindrome (6477660667746).

The spelling of 1044420423345 in words is "one trillion, forty-four billion, four hundred twenty million, four hundred twenty-three thousand, three hundred forty-five".