1440224420004 has 18 divisors (see below), whose sum is σ = 3640567283990. Its totient is φ = 480074806656.

The previous prime is 1440224419999. The next prime is 1440224420017. The reversal of 1440224420004 is 4000244220441.

1440224420004 is a `hidden beast` number, since 14 + 4 + 0 + 224 + 420 + 0 + 0 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1363051580004 + 77172840000 = 1167498^2 + 277800^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a self number, because there is not a number n which added to its sum of digits gives 1440224420004.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20003116909 + ... + 20003116980.

Almost surely, 2^{1440224420004} is an apocalyptic number.

It is an amenable number.

1440224420004 is an abundant number, since it is smaller than the sum of its proper divisors (2200342863986).

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

1440224420004 is a wasteful number, since it uses less digits than its factorization.

1440224420004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40006233899 (or 40006233894 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 27.

Adding to 1440224420004 its reverse (4000244220441), we get a palindrome (5440468640445).

The spelling of 1440224420004 in words is "one trillion, four hundred forty billion, two hundred twenty-four million, four hundred twenty thousand, four".