135121332 has 48 divisors (see below), whose sum is σ = 320144832. Its totient is φ = 44352000.

The previous prime is 135121309. The next prime is 135121333. The reversal of 135121332 is 233121531.

135121332 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×135121332² = 36515548722908448, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 135121299 and 135121308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135121333) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 340158 + ... + 340554.

It is an arithmetic number, because the mean of its divisors is an integer number (6669684).

Almost surely, 2^135121332 is an apocalyptic number.

135121332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

135121332 is an abundant number, since it is smaller than the sum of its proper divisors (185023500).

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

135121332 is a wasteful number, since it uses less digits than its factorization.

135121332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 768 (or 766 counting only the distinct ones).

The product of its digits is 540, while the sum is 21.

The square root of 135121332 is about 11624.1701639300. The cubic root of 135121332 is about 513.1464230224.

Adding to 135121332 its reverse (233121531), we get a palindrome (368242863).

The spelling of 135121332 in words is "one hundred thirty-five million, one hundred twenty-one thousand, three hundred thirty-two".