1340443424 has 24 divisors (see below), whose sum is σ = 2641006620. Its totient is φ = 669711616.

The previous prime is 1340443397. The next prime is 1340443439. The reversal of 1340443424 is 4243440431.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1338096400 + 2347024 = 36580^2 + 1532^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28682 + ... + 59190.

Almost surely, 2^1340443424 is an apocalyptic number.

It is an amenable number.

1340443424 is a deficient number, since it is larger than the sum of its proper divisors (1300563196).

1340443424 is a wasteful number, since it uses less digits than its factorization.

1340443424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31892 (or 31884 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 29.

The square root of 1340443424 is about 36612.0666447553. The cubic root of 1340443424 is about 1102.5953658318.

Adding to 1340443424 its reverse (4243440431), we get a palindrome (5583883855).

The spelling of 1340443424 in words is "one billion, three hundred forty million, four hundred forty-three thousand, four hundred twenty-four".