135535240 has 32 divisors (see below), whose sum is σ = 305285760. Its totient is φ = 54155200.

The previous prime is 135535219. The next prime is 135535243. The reversal of 135535240 is 42535531.

It is a junction number, because it is equal to n+sod(n) for n = 135535199 and 135535208.

It is not an unprimeable number, because it can be changed into a prime (135535243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71505 + ... + 73375.

It is an arithmetic number, because the mean of its divisors is an integer number (9540180).

Almost surely, 2^135535240 is an apocalyptic number.

135535240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135535240 is an abundant number, since it is smaller than the sum of its proper divisors (169750520).

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

135535240 is a wasteful number, since it uses less digits than its factorization.

135535240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3693 (or 3689 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 28.

The square root of 135535240 is about 11641.9603160293. The cubic root of 135535240 is about 513.6698511214.

The spelling of 135535240 in words is "one hundred thirty-five million, five hundred thirty-five thousand, two hundred forty".