135255042 has 64 divisors (see below), whose sum is σ = 337800960. Its totient is φ = 39802752.

The previous prime is 135255041. The next prime is 135255047. The reversal of 135255042 is 240552531.

It is a happy number.

135255042 is a `hidden beast` number, since 135 + 25 + 504 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 135254997 and 135255015.

It is not an unprimeable number, because it can be changed into a prime (135255041) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11958 + ... + 20334.

It is an arithmetic number, because the mean of its divisors is an integer number (5278140).

Almost surely, 2^135255042 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 135255042, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (168900480).

135255042 is an abundant number, since it is smaller than the sum of its proper divisors (202545918).

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

135255042 is a wasteful number, since it uses less digits than its factorization.

135255042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8424 (or 8418 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 135255042 is about 11629.9201201040. The cubic root of 135255042 is about 513.3156294376.

The spelling of 135255042 in words is "one hundred thirty-five million, two hundred fifty-five thousand, forty-two".