135723249 has 16 divisors (see below), whose sum is σ = 202659840. Its totient is φ = 89767440.

The previous prime is 135723241. The next prime is 135723293. The reversal of 135723249 is 942327531.

135723249 is a `hidden beast` number, since 13 + 572 + 32 + 49 = 666.

135723249 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 135723249 - 2³ = 135723241 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (135723241) 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, 16362 + ... + 23219.

It is an arithmetic number, because the mean of its divisors is an integer number (12666240).

Almost surely, 2^135723249 is an apocalyptic number.

It is an amenable number.

135723249 is a deficient number, since it is larger than the sum of its proper divisors (66936591).

135723249 is a wasteful number, since it uses less digits than its factorization.

135723249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39717 (or 39711 counting only the distinct ones).

The product of its digits is 45360, while the sum is 36.

The square root of 135723249 is about 11650.0321458784. The cubic root of 135723249 is about 513.9072553927.

The spelling of 135723249 in words is "one hundred thirty-five million, seven hundred twenty-three thousand, two hundred forty-nine".