135607243 has 2 divisors, whose sum is σ = 135607244. Its totient is φ = 135607242.

The previous prime is 135607229. The next prime is 135607259. The reversal of 135607243 is 342706531.

It is a weak prime.

It is an emirp because it is prime and its reverse (342706531) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135607243 is a prime.

It is a super-2 number, since 2×135607243² = 36778648708122098, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (135607273) by changing a digit.

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 as a sum of consecutive naturals, namely, 67803621 + 67803622.

It is an arithmetic number, because the mean of its divisors is an integer number (67803622).

Almost surely, 2^135607243 is an apocalyptic number.

135607243 is a deficient number, since it is larger than the sum of its proper divisors (1).

135607243 is an equidigital number, since it uses as much as digits as its factorization.

135607243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 31.

The square root of 135607243 is about 11645.0522970058. The cubic root of 135607243 is about 513.7607972662.

The spelling of 135607243 in words is "one hundred thirty-five million, six hundred seven thousand, two hundred forty-three".