1440140144 has 40 divisors (see below), whose sum is σ = 2834818560. Its totient is φ = 708612800.

The previous prime is 1440140137. The next prime is 1440140153. The reversal of 1440140144 is 4410410441.

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, 952349 + ... + 953859.

It is an arithmetic number, because the mean of its divisors is an integer number (70870464).

Almost surely, 2^1440140144 is an apocalyptic number.

It is an amenable number.

1440140144 is a deficient number, since it is larger than the sum of its proper divisors (1394678416).

1440140144 is a wasteful number, since it uses less digits than its factorization.

1440140144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2429 (or 2423 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 23.

The square root of 1440140144 is about 37949.1784364300. The cubic root of 1440140144 is about 1129.2798669559.

Adding to 1440140144 its reverse (4410410441), we get a palindrome (5850550585).

It can be divided in two parts, 14401 and 40144, that added together give a palindrome (54545).

The spelling of 1440140144 in words is "one billion, four hundred forty million, one hundred forty thousand, one hundred forty-four".