135321900 has 72 divisors (see below), whose sum is σ = 447471360. Its totient is φ = 30930240.

The previous prime is 135321899. The next prime is 135321947. The reversal of 135321900 is 9123531.

It is a happy number.

It is a super-2 number, since 2×135321900² = 36624033239220000, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30120 + ... + 34319.

It is an arithmetic number, because the mean of its divisors is an integer number (6214880).

Almost surely, 2^135321900 is an apocalyptic number.

135321900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135321900 is an abundant number, since it is smaller than the sum of its proper divisors (312149460).

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

135321900 is a wasteful number, since it uses less digits than its factorization.

135321900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64463 (or 64456 counting only the distinct ones).

The product of its (nonzero) digits is 810, while the sum is 24.

The square root of 135321900 is about 11632.7941613354. The cubic root of 135321900 is about 513.4001946230.

The spelling of 135321900 in words is "one hundred thirty-five million, three hundred twenty-one thousand, nine hundred".