135144005 has 4 divisors (see below), whose sum is σ = 162172812. Its totient is φ = 108115200.

The previous prime is 135143993. The next prime is 135144019. The reversal of 135144005 is 500441531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 500441531 = 41 ⋅12205891.

It can be written as a sum of positive squares in 2 ways, for example, as 72148036 + 62995969 = 8494^2 + 7937^2 .

It is not a de Polignac number, because 135144005 - 2¹⁶ = 135078469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13514396 + ... + 13514405.

It is an arithmetic number, because the mean of its divisors is an integer number (40543203).

Almost surely, 2^135144005 is an apocalyptic number.

It is an amenable number.

135144005 is a deficient number, since it is larger than the sum of its proper divisors (27028807).

135144005 is an equidigital number, since it uses as much as digits as its factorization.

135144005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27028806.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 135144005 is about 11625.1453754351. The cubic root of 135144005 is about 513.1751229520.

Adding to 135144005 its reverse (500441531), we get a palindrome (635585536).

The spelling of 135144005 in words is "one hundred thirty-five million, one hundred forty-four thousand, five".