135040878 has 128 divisors (see below), whose sum is σ = 361267200. Its totient is φ = 36578304.

The previous prime is 135040853. The next prime is 135040879. The reversal of 135040878 is 878040531.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135040879) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 1063251 + ... + 1063377.

It is an arithmetic number, because the mean of its divisors is an integer number (2822400).

Almost surely, 2^135040878 is an apocalyptic number.

135040878 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 135040878, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (180633600).

135040878 is an abundant number, since it is smaller than the sum of its proper divisors (226226322).

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

135040878 is a wasteful number, since it uses less digits than its factorization.

135040878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271 (or 265 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 135040878 is about 11620.7090145137. The cubic root of 135040878 is about 513.0445568494.

The spelling of 135040878 in words is "one hundred thirty-five million, forty thousand, eight hundred seventy-eight".