135331205242 has 4 divisors (see below), whose sum is σ = 202996807866. Its totient is φ = 67665602620.

The previous prime is 135331205237. The next prime is 135331205257. The reversal of 135331205242 is 242502133531.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 117538579921 + 17792625321 = 342839^2 + 133389^2 .

It is a super-2 number, since 2×135331205242² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33832801309 + ... + 33832801312.

Almost surely, 2^135331205242 is an apocalyptic number.

135331205242 is a deficient number, since it is larger than the sum of its proper divisors (67665602624).

135331205242 is an equidigital number, since it uses as much as digits as its factorization.

135331205242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67665602623.

The product of its (nonzero) digits is 21600, while the sum is 31.

Adding to 135331205242 its reverse (242502133531), we get a palindrome (377833338773).

The spelling of 135331205242 in words is "one hundred thirty-five billion, three hundred thirty-one million, two hundred five thousand, two hundred forty-two".