1440032121 has 32 divisors (see below), whose sum is σ = 2337177600. Its totient is φ = 869052240.

The previous prime is 1440032081. The next prime is 1440032129. The reversal of 1440032121 is 1212300441.

It is not a de Polignac number, because 1440032121 - 2⁷ = 1440031993 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1440032094 and 1440032103.

It is not an unprimeable number, because it can be changed into a prime (1440032129) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 60840 + ... + 81126.

It is an arithmetic number, because the mean of its divisors is an integer number (73036800).

Almost surely, 2^1440032121 is an apocalyptic number.

1440032121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1440032121 is a deficient number, since it is larger than the sum of its proper divisors (897145479).

1440032121 is a wasteful number, since it uses less digits than its factorization.

1440032121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20546 (or 20540 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1440032121 is about 37947.7551509967. The cubic root of 1440032121 is about 1129.2516309888.

Adding to 1440032121 its reverse (1212300441), we get a palindrome (2652332562).

The spelling of 1440032121 in words is "one billion, four hundred forty million, thirty-two thousand, one hundred twenty-one".