135042020442 has 24 divisors (see below), whose sum is σ = 334389765216. Its totient is φ = 38583434376.

The previous prime is 135042020441. The next prime is 135042020467. The reversal of 135042020442 is 244020240531.

135042020442 is a `hidden beast` number, since 1 + 35 + 0 + 420 + 204 + 4 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (135042020441) by changing a digit.

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 in 11 ways as a sum of consecutive naturals, for example, 535880908 + ... + 535881159.

It is an arithmetic number, because the mean of its divisors is an integer number (13932906884).

Almost surely, 2^135042020442 is an apocalyptic number.

135042020442 is an abundant number, since it is smaller than the sum of its proper divisors (199347744774).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

135042020442 is a wasteful number, since it uses less digits than its factorization.

135042020442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1071762082 (or 1071762079 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

Adding to 135042020442 its reverse (244020240531), we get a palindrome (379062260973).

The spelling of 135042020442 in words is "one hundred thirty-five billion, forty-two million, twenty thousand, four hundred forty-two".