135020340 has 144 divisors (see below), whose sum is σ = 504137088. Its totient is φ = 28484352.

The previous prime is 135020323. The next prime is 135020351. The reversal of 135020340 is 43020531.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12259 + ... + 20501.

It is an arithmetic number, because the mean of its divisors is an integer number (3500952).

Almost surely, 2^135020340 is an apocalyptic number.

135020340 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 135020340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (252068544).

135020340 is an abundant number, since it is smaller than the sum of its proper divisors (369116748).

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

135020340 is a wasteful number, since it uses less digits than its factorization.

135020340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8278 (or 8273 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 135020340 is about 11619.8252998916. The cubic root of 135020340 is about 513.0185463468.

Adding to 135020340 its reverse (43020531), we get a palindrome (178040871).

The spelling of 135020340 in words is "one hundred thirty-five million, twenty thousand, three hundred forty".