1440001121 has 8 divisors (see below), whose sum is σ = 1559436480. Its totient is φ = 1321803792.

The previous prime is 1440001117. The next prime is 1440001153. The reversal of 1440001121 is 1211000441.

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

It is a cyclic number.

It is not a de Polignac number, because 1440001121 - 2² = 1440001117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1440001096 and 1440001105.

It is not an unprimeable number, because it can be changed into a prime (1440001111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 307085 + ... + 311738.

It is an arithmetic number, because the mean of its divisors is an integer number (194929560).

Almost surely, 2^1440001121 is an apocalyptic number.

It is an amenable number.

1440001121 is a deficient number, since it is larger than the sum of its proper divisors (119435359).

1440001121 is a wasteful number, since it uses less digits than its factorization.

1440001121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619015.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 1440001121 is about 37947.3466924896. The cubic root of 1440001121 is about 1129.2435276853.

Adding to 1440001121 its reverse (1211000441), we get a palindrome (2651001562).

The spelling of 1440001121 in words is "one billion, four hundred forty million, one thousand, one hundred twenty-one".