135469 has 2 divisors, whose sum is σ = 135470.
Its totient is φ = 135468.
The previous prime is 135467. The next prime is 135479. The reversal of 135469 is 964531.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 108900 + 26569 = 330^2 + 163^2
It is an emirp because it is prime and its reverse (964531) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 135469 - 21 = 135467 is a prime.
It is a super-2 number, since 2×1354692 = 36703699922, which contains 22 as substring.
Together with 135467, 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 (135461) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (7) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67734 + 67735.
It is an arithmetic number, because the mean of its divisors is an integer number (67735).
2135469 is an apocalyptic number.
135469 is the 213-rd hex number.
It is an amenable number.
135469 is a deficient number, since it is larger than the sum of its proper divisors (1).
135469 is an equidigital number, since it uses as much as digits as its factorization.
135469 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 3240, while the sum is 28.
The square root of 135469 is about 368.0611362260.
The cubic root of 135469 is about 51.3586155704.
The spelling of 135469 in words is "one hundred thirty-five thousand, four hundred sixty-nine".