135005240 has 32 divisors (see below), whose sum is σ = 304205760. Its totient is φ = 53923200.

The previous prime is 135005219. The next prime is 135005249. The reversal of 135005240 is 42500531.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135005249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30785 + ... + 34895.

It is an arithmetic number, because the mean of its divisors is an integer number (9506430).

Almost surely, 2^135005240 is an apocalyptic number.

135005240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135005240 is an abundant number, since it is smaller than the sum of its proper divisors (169200520).

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

135005240 is a wasteful number, since it uses less digits than its factorization.

135005240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4943 (or 4939 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 135005240 is about 11619.1755301312. The cubic root of 135005240 is about 512.9994211571. Note that the first 3 decimals are identical.

Adding to 135005240 its reverse (42500531), we get a palindrome (177505771).

The spelling of 135005240 in words is "one hundred thirty-five million, five thousand, two hundred forty".