135344240 has 20 divisors (see below), whose sum is σ = 314675544. Its totient is φ = 54137664.

The previous prime is 135344219. The next prime is 135344243. The reversal of 135344240 is 42443531.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135344243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 845822 + ... + 845981.

Almost surely, 2^135344240 is an apocalyptic number.

135344240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135344240 is an abundant number, since it is smaller than the sum of its proper divisors (179331304).

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

135344240 is a wasteful number, since it uses less digits than its factorization.

135344240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1691816 (or 1691810 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 135344240 is about 11633.7543381318. The cubic root of 135344240 is about 513.4284451113.

Adding to 135344240 its reverse (42443531), we get a palindrome (177787771).

The spelling of 135344240 in words is "one hundred thirty-five million, three hundred forty-four thousand, two hundred forty".