135642343 has 2 divisors, whose sum is σ = 135642344. Its totient is φ = 135642342.

The previous prime is 135642341. The next prime is 135642347. The reversal of 135642343 is 343246531.

It is a weak prime.

It is an emirp because it is prime and its reverse (343246531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 135642343 - 2¹ = 135642341 is a prime.

Together with 135642341, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135642341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67821171 + 67821172.

It is an arithmetic number, because the mean of its divisors is an integer number (67821172).

Almost surely, 2^135642343 is an apocalyptic number.

135642343 is a deficient number, since it is larger than the sum of its proper divisors (1).

135642343 is an equidigital number, since it uses as much as digits as its factorization.

135642343 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 31.

The square root of 135642343 is about 11646.5592773145. The cubic root of 135642343 is about 513.8051199930.

Adding to 135642343 its reverse (343246531), we get a palindrome (478888874).

The spelling of 135642343 in words is "one hundred thirty-five million, six hundred forty-two thousand, three hundred forty-three".