135235130042 has 16 divisors (see below), whose sum is σ = 204056283240. Its totient is φ = 67216488192.

The previous prime is 135235130039. The next prime is 135235130077. The reversal of 135235130042 is 240031532531.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 125834082361 + 9401047681 = 354731^2 + 96959^2 .

It is a junction number, because it is equal to n+sod(n) for n = 135235129987 and 135235130014.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2579078 + ... + 2630990.

Almost surely, 2^135235130042 is an apocalyptic number.

135235130042 is a deficient number, since it is larger than the sum of its proper divisors (68821153198).

135235130042 is a wasteful number, since it uses less digits than its factorization.

135235130042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59617.

The product of its (nonzero) digits is 10800, while the sum is 29.

Adding to 135235130042 its reverse (240031532531), we get a palindrome (375266662573).

The spelling of 135235130042 in words is "one hundred thirty-five billion, two hundred thirty-five million, one hundred thirty thousand, forty-two".