135244042 has 8 divisors (see below), whose sum is σ = 203081796. Its totient is φ = 67550112.

The previous prime is 135244001. The next prime is 135244063. The reversal of 135244042 is 240442531.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 129527161 + 5716881 = 11381^2 + 2391^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 135243998 and 135244016.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 33573 + ... + 37384.

Almost surely, 2^135244042 is an apocalyptic number.

135244042 is a deficient number, since it is larger than the sum of its proper divisors (67837754).

135244042 is an equidigital number, since it uses as much as digits as its factorization.

135244042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71912.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 135244042 is about 11629.4471923647. The cubic root of 135244042 is about 513.3017134437.

Adding to 135244042 its reverse (240442531), we get a palindrome (375686573).

The spelling of 135244042 in words is "one hundred thirty-five million, two hundred forty-four thousand, forty-two".