135943440 has 40 divisors (see below), whose sum is σ = 421425408. Its totient is φ = 36251520.

The previous prime is 135943433. The next prime is 135943453. The reversal of 135943440 is 44349531.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 282976 + ... + 283455.

Almost surely, 2^135943440 is an apocalyptic number.

135943440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135943440 is an abundant number, since it is smaller than the sum of its proper divisors (285481968).

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

135943440 is a wasteful number, since it uses less digits than its factorization.

135943440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566447 (or 566441 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 135943440 is about 11659.4785475166. The cubic root of 135943440 is about 514.1850182041.

The spelling of 135943440 in words is "one hundred thirty-five million, nine hundred forty-three thousand, four hundred forty".