1440120321242 has 8 divisors (see below), whose sum is σ = 2181568407732. Its totient is φ = 712930852000.

The previous prime is 1440120321229. The next prime is 1440120321257. The reversal of 1440120321242 is 2421230210441.

It can be written as a sum of positive squares in 2 ways, for example, as 1021613541001 + 418506780241 = 1010749^2 + 646921^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1440120321242² (a number of 25 digits) contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 3564654059 + ... + 3564654462.

Almost surely, 2^{1440120321242} is an apocalyptic number.

1440120321242 is a deficient number, since it is larger than the sum of its proper divisors (741448086490).

1440120321242 is a wasteful number, since it uses less digits than its factorization.

1440120321242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7129308624.

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 1440120321242 its reverse (2421230210441), we get a palindrome (3861350531683).

The spelling of 1440120321242 in words is "one trillion, four hundred forty billion, one hundred twenty million, three hundred twenty-one thousand, two hundred forty-two".