135711240 has 64 divisors (see below), whose sum is σ = 465298560. Its totient is φ = 31019520.

The previous prime is 135711229. The next prime is 135711253. The reversal of 135711240 is 42117531.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 135711240.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79941 + ... + 81620.

It is an arithmetic number, because the mean of its divisors is an integer number (7270290).

Almost surely, 2^135711240 is an apocalyptic number.

135711240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135711240 is an abundant number, since it is smaller than the sum of its proper divisors (329587320).

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

135711240 is a wasteful number, since it uses less digits than its factorization.

135711240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161582 (or 161578 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 135711240 is about 11649.5167281737. The cubic root of 135711240 is about 513.8920978465.

Adding to 135711240 its reverse (42117531), we get a palindrome (177828771).

The spelling of 135711240 in words is "one hundred thirty-five million, seven hundred eleven thousand, two hundred forty".