1440041121 has 6 divisors (see below), whose sum is σ = 2080059410. Its totient is φ = 960027408.

The previous prime is 1440041089. The next prime is 1440041123. The reversal of 1440041121 is 1211400441.

It can be written as a sum of positive squares in only one way, i.e., 1136027025 + 304014096 = 33705^2 + 17436^2 .

It is not a de Polignac number, because 1440041121 - 2⁵ = 1440041089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1440041094 and 1440041103.

It is not an unprimeable number, because it can be changed into a prime (1440041123) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 80002276 + ... + 80002293.

Almost surely, 2^1440041121 is an apocalyptic number.

It is an amenable number.

1440041121 is a deficient number, since it is larger than the sum of its proper divisors (640018289).

1440041121 is a wasteful number, since it uses less digits than its factorization.

1440041121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160004575 (or 160004572 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 1440041121 is about 37947.8737349011. The cubic root of 1440041121 is about 1129.2539835390.

Adding to 1440041121 its reverse (1211400441), we get a palindrome (2651441562).

The spelling of 1440041121 in words is "one billion, four hundred forty million, forty-one thousand, one hundred twenty-one".