1440012144 has 40 divisors (see below), whose sum is σ = 3722519680. Its totient is φ = 479683008.

The previous prime is 1440012107. The next prime is 1440012151. The reversal of 1440012144 is 4412100441.

It is a self number, because there is not a number n which added to its sum of digits gives 1440012144.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 68877 + ... + 87315.

It is an arithmetic number, because the mean of its divisors is an integer number (93062992).

Almost surely, 2^1440012144 is an apocalyptic number.

It is an amenable number.

1440012144 is an abundant number, since it is smaller than the sum of its proper divisors (2282507536).

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

1440012144 is a wasteful number, since it uses less digits than its factorization.

1440012144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20077 (or 20071 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 1440012144 is about 37947.4919329328. The cubic root of 1440012144 is about 1129.2464090765.

Adding to 1440012144 its reverse (4412100441), we get a palindrome (5852112585).

The spelling of 1440012144 in words is "one billion, four hundred forty million, twelve thousand, one hundred forty-four".