135209712 has 40 divisors (see below), whose sum is σ = 381047040. Its totient is φ = 40972480.

The previous prime is 135209699. The next prime is 135209717. The reversal of 135209712 is 217902531.

It is a self number, because there is not a number n which added to its sum of digits gives 135209712.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135209717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127512 + ... + 128567.

It is an arithmetic number, because the mean of its divisors is an integer number (9526176).

Almost surely, 2^135209712 is an apocalyptic number.

135209712 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

135209712 is an abundant number, since it is smaller than the sum of its proper divisors (245837328).

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

135209712 is a wasteful number, since it uses less digits than its factorization.

135209712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256101 (or 256095 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 30.

The square root of 135209712 is about 11627.9711041953. The cubic root of 135209712 is about 513.2582780392.

It can be divided in two parts, 13520 and 9712, that added together give a palindrome (23232).

The spelling of 135209712 in words is "one hundred thirty-five million, two hundred nine thousand, seven hundred twelve".