135245240 has 64 divisors (see below), whose sum is σ = 329767200. Its totient is φ = 49623552.

The previous prime is 135245237. The next prime is 135245261. The reversal of 135245240 is 42542531.

It is a happy number.

135245240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

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, 92354 + ... + 93806.

Almost surely, 2^135245240 is an apocalyptic number.

135245240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 135245240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (164883600).

135245240 is an abundant number, since it is smaller than the sum of its proper divisors (194521960).

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

135245240 is a wasteful number, since it uses less digits than its factorization.

135245240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1656 (or 1652 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 135245240 is about 11629.4986994281. The cubic root of 135245240 is about 513.3032290586.

Adding to 135245240 its reverse (42542531), we get a palindrome (177787771).

The spelling of 135245240 in words is "one hundred thirty-five million, two hundred forty-five thousand, two hundred forty".