135423539 has 2 divisors, whose sum is σ = 135423540. Its totient is φ = 135423538.

The previous prime is 135423523. The next prime is 135423569. The reversal of 135423539 is 935324531.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 135423539 - 2⁴ = 135423523 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 135423499 and 135423508.

It is not a weakly prime, because it can be changed into another prime (135423569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67711769 + 67711770.

It is an arithmetic number, because the mean of its divisors is an integer number (67711770).

Almost surely, 2^135423539 is an apocalyptic number.

135423539 is a deficient number, since it is larger than the sum of its proper divisors (1).

135423539 is an equidigital number, since it uses as much as digits as its factorization.

135423539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48600, while the sum is 35.

The square root of 135423539 is about 11637.1619822017. The cubic root of 135423539 is about 513.5286991333.

The spelling of 135423539 in words is "one hundred thirty-five million, four hundred twenty-three thousand, five hundred thirty-nine".