1440120320240 has 80 divisors (see below), whose sum is σ = 3889336751040. Its totient is φ = 485661173760.

The previous prime is 1440120320239. The next prime is 1440120320257. The reversal of 1440120320240 is 420230210441.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21044885 + ... + 21113204.

It is an arithmetic number, because the mean of its divisors is an integer number (48616709388).

Almost surely, 2^{1440120320240} is an apocalyptic number.

1440120320240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1440120320240 is an abundant number, since it is smaller than the sum of its proper divisors (2449216430800).

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

1440120320240 is a wasteful number, since it uses less digits than its factorization.

1440120320240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42158170 (or 42158164 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 1440120320240 its reverse (420230210441), we get a palindrome (1860350530681).

The spelling of 1440120320240 in words is "one trillion, four hundred forty billion, one hundred twenty million, three hundred twenty thousand, two hundred forty".