135045042 has 64 divisors (see below), whose sum is σ = 320505984. Its totient is φ = 37463040.

The previous prime is 135045037. The next prime is 135045089. The reversal of 135045042 is 240540531.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39888 + ... + 43140.

It is an arithmetic number, because the mean of its divisors is an integer number (5007906).

Almost surely, 2^135045042 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 135045042, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160252992).

135045042 is an abundant number, since it is smaller than the sum of its proper divisors (185460942).

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

135045042 is a wasteful number, since it uses less digits than its factorization.

135045042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3323.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 135045042 is about 11620.8881760389. Note that the first 3 decimals coincide. The cubic root of 135045042 is about 513.0498300566.

Adding to 135045042 its reverse (240540531), we get a palindrome (375585573).

The spelling of 135045042 in words is "one hundred thirty-five million, forty-five thousand, forty-two".