135511140 has 24 divisors (see below), whose sum is σ = 379431360. Its totient is φ = 36136288.

The previous prime is 135511127. The next prime is 135511151. The reversal of 135511140 is 41115531.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1129200 + ... + 1129319.

It is an arithmetic number, because the mean of its divisors is an integer number (15809640).

Almost surely, 2^135511140 is an apocalyptic number.

135511140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135511140 is an abundant number, since it is smaller than the sum of its proper divisors (243920220).

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

135511140 is a wasteful number, since it uses less digits than its factorization.

135511140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2258531 (or 2258529 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 21.

The square root of 135511140 is about 11640.9252209607. The cubic root of 135511140 is about 513.6394034995.

Adding to 135511140 its reverse (41115531), we get a palindrome (176626671).

The spelling of 135511140 in words is "one hundred thirty-five million, five hundred eleven thousand, one hundred forty".