135940 has 24 divisors (see below), whose sum is σ = 326592. Its totient is φ = 46560.

The previous prime is 135937. The next prime is 135977. The reversal of 135940 is 49531.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 346 + ... + 625.

It is an arithmetic number, because the mean of its divisors is an integer number (13608).

2¹³⁵⁹⁴⁰ is an apocalyptic number.

135940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135940 is an abundant number, since it is smaller than the sum of its proper divisors (190652).

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

135940 is a wasteful number, since it uses less digits than its factorization.

135940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 987 (or 985 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 135940 is about 368.7004203957. The cubic root of 135940 is about 51.4180681078.

The spelling of 135940 in words is "one hundred thirty-five thousand, nine hundred forty".