135723144 has 16 divisors (see below), whose sum is σ = 339307920. Its totient is φ = 45241040.

The previous prime is 135723139. The next prime is 135723157. The reversal of 135723144 is 441327531.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2827542 + ... + 2827589.

It is an arithmetic number, because the mean of its divisors is an integer number (21206745).

Almost surely, 2^135723144 is an apocalyptic number.

It is an amenable number.

135723144 is an abundant number, since it is smaller than the sum of its proper divisors (203584776).

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

135723144 is a wasteful number, since it uses less digits than its factorization.

135723144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5655140 (or 5655136 counting only the distinct ones).

The product of its digits is 10080, while the sum is 30.

The square root of 135723144 is about 11650.0276394522. The cubic root of 135723144 is about 513.9071228674.

The spelling of 135723144 in words is "one hundred thirty-five million, seven hundred twenty-three thousand, one hundred forty-four".