1243433141 has 2 divisors, whose sum is σ = 1243433142. Its totient is φ = 1243433140.

The previous prime is 1243433027. The next prime is 1243433143. The reversal of 1243433141 is 1413343421.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 915062500 + 328370641 = 30250^2 + 18121^2 .

It is a cyclic number.

It is not a de Polignac number, because 1243433141 - 2¹⁰ = 1243432117 is a prime.

It is a super-2 number, since 2×1243433141² = 3092251952274251762, which contains 22 as substring.

Together with 1243433143, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1243433141.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1243433143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621716570 + 621716571.

It is an arithmetic number, because the mean of its divisors is an integer number (621716571).

Almost surely, 2^1243433141 is an apocalyptic number.

It is an amenable number.

1243433141 is a deficient number, since it is larger than the sum of its proper divisors (1).

1243433141 is an equidigital number, since it uses as much as digits as its factorization.

1243433141 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 26.

The square root of 1243433141 is about 35262.3473552173. The cubic root of 1243433141 is about 1075.3276494675.

Adding to 1243433141 its reverse (1413343421), we get a palindrome (2656776562).

The spelling of 1243433141 in words is "one billion, two hundred forty-three million, four hundred thirty-three thousand, one hundred forty-one".