1341121543 has 2 divisors, whose sum is σ = 1341121544. Its totient is φ = 1341121542.

The previous prime is 1341121511. The next prime is 1341121549. The reversal of 1341121543 is 3451211431.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1341121543 - 2⁵ = 1341121511 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1341121549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 670560771 + 670560772.

It is an arithmetic number, because the mean of its divisors is an integer number (670560772).

Almost surely, 2^1341121543 is an apocalyptic number.

1341121543 is a deficient number, since it is larger than the sum of its proper divisors (1).

1341121543 is an equidigital number, since it uses as much as digits as its factorization.

1341121543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1440, while the sum is 25.

The square root of 1341121543 is about 36621.3263413547. The cubic root of 1341121543 is about 1102.7812657127.

Adding to 1341121543 its reverse (3451211431), we get a palindrome (4792332974).

The spelling of 1341121543 in words is "one billion, three hundred forty-one million, one hundred twenty-one thousand, five hundred forty-three".