136243043 has 2 divisors, whose sum is σ = 136243044.
Its totient is φ = 136243042.
The previous prime is 136243021. The next prime is 136243057. The reversal of 136243043 is 340342631.
It is a happy number.
It is a strong prime.
It is an emirp because it is prime and its reverse (340342631) is a distict prime.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-136243043 is a prime.
It is a Chen prime.
It is not a weakly prime, because it can be changed into another prime (136243343) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68121521 + 68121522.
It is an arithmetic number, because the mean of its divisors is an integer number (68121522).
Almost surely, 2136243043 is an apocalyptic number.
136243043 is a deficient number, since it is larger than the sum of its proper divisors (1).
136243043 is an equidigital number, since it uses as much as digits as its factorization.
136243043 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 5184, while the sum is 26.
The square root of 136243043 is about 11672.3195209864.
The cubic root of 136243043 is about 514.5624750399.
Adding to 136243043 its reverse (340342631), we get a palindrome (476585674).
The spelling of 136243043 in words is "one hundred thirty-six million, two hundred forty-three thousand, forty-three".