1343143240 has 32 divisors (see below), whose sum is σ = 3023163000. Its totient is φ = 537063424.

The previous prime is 1343143229. The next prime is 1343143273. The reversal of 1343143240 is 423413431.

It can be written as a sum of positive squares in 4 ways, for example, as 1138252644 + 204890596 = 33738^2 + 14314^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 167646 + ... + 175474.

Almost surely, 2^1343143240 is an apocalyptic number.

1343143240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1343143240 is an abundant number, since it is smaller than the sum of its proper divisors (1680019760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1343143240 is a wasteful number, since it uses less digits than its factorization.

1343143240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12129 (or 12125 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 1343143240 is about 36648.9186743620. The cubic root of 1343143240 is about 1103.3351230995.

Adding to 1343143240 its reverse (423413431), we get a palindrome (1766556671).

The spelling of 1343143240 in words is "one billion, three hundred forty-three million, one hundred forty-three thousand, two hundred forty".