1340143141 has 2 divisors, whose sum is σ = 1340143142. Its totient is φ = 1340143140.

The previous prime is 1340143111. The next prime is 1340143163. The reversal of 1340143141 is 1413410431.

It is a happy number.

It is an a-pointer prime, because the next prime (1340143163) can be obtained adding 1340143141 to its sum of digits (22).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1044647041 + 295496100 = 32321^2 + 17190^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1340143141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1340143111) 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 as a sum of consecutive naturals, namely, 670071570 + 670071571.

It is an arithmetic number, because the mean of its divisors is an integer number (670071571).

Almost surely, 2^1340143141 is an apocalyptic number.

It is an amenable number.

1340143141 is a deficient number, since it is larger than the sum of its proper divisors (1).

1340143141 is an equidigital number, since it uses as much as digits as its factorization.

1340143141 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 1340143141 is about 36607.9655403028. The cubic root of 1340143141 is about 1102.5130260715.

Adding to 1340143141 its reverse (1413410431), we get a palindrome (2753553572).

The spelling of 1340143141 in words is "one billion, three hundred forty million, one hundred forty-three thousand, one hundred forty-one".