135861132 has 24 divisors (see below), whose sum is σ = 345828672. Its totient is φ = 41170000.

The previous prime is 135861109. The next prime is 135861137. The reversal of 135861132 is 231168531.

It is a self number, because there is not a number n which added to its sum of digits gives 135861132.

It is not an unprimeable number, because it can be changed into a prime (135861137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 514494 + ... + 514757.

It is an arithmetic number, because the mean of its divisors is an integer number (14409528).

Almost surely, 2^135861132 is an apocalyptic number.

135861132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

135861132 is an abundant number, since it is smaller than the sum of its proper divisors (209967540).

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

135861132 is a wasteful number, since it uses less digits than its factorization.

135861132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1029269 (or 1029267 counting only the distinct ones).

The product of its digits is 4320, while the sum is 30.

The square root of 135861132 is about 11655.9483526653. The cubic root of 135861132 is about 514.0812248308.

The spelling of 135861132 in words is "one hundred thirty-five million, eight hundred sixty-one thousand, one hundred thirty-two".