135744087 has 4 divisors (see below), whose sum is σ = 180992120. Its totient is φ = 90496056.

The previous prime is 135744079. The next prime is 135744097. The reversal of 135744087 is 780447531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 780447531 = 3 ⋅260149177.

It is not a de Polignac number, because 135744087 - 2³ = 135744079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135744097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22624012 + ... + 22624017.

It is an arithmetic number, because the mean of its divisors is an integer number (45248030).

Almost surely, 2^135744087 is an apocalyptic number.

135744087 is a deficient number, since it is larger than the sum of its proper divisors (45248033).

135744087 is an equidigital number, since it uses as much as digits as its factorization.

135744087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45248032.

The product of its (nonzero) digits is 94080, while the sum is 39.

The square root of 135744087 is about 11650.9264438499. The cubic root of 135744087 is about 513.9335546241.

The spelling of 135744087 in words is "one hundred thirty-five million, seven hundred forty-four thousand, eighty-seven".