136140005 has 4 divisors (see below), whose sum is σ = 163368012. Its totient is φ = 108912000.

The previous prime is 136139999. The next prime is 136140023. The reversal of 136140005 is 500041631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 500041631 = 457 ⋅1094183.

It can be written as a sum of positive squares in 2 ways, for example, as 28665316 + 107474689 = 5354^2 + 10367^2 .

It is not a de Polignac number, because 136140005 - 2⁸ = 136139749 is a prime.

It is a super-2 number, since 2×136140005² = 37068201922800050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 13613996 + ... + 13614005.

It is an arithmetic number, because the mean of its divisors is an integer number (40842003).

Almost surely, 2^136140005 is an apocalyptic number.

It is an amenable number.

136140005 is a deficient number, since it is larger than the sum of its proper divisors (27228007).

136140005 is an equidigital number, since it uses as much as digits as its factorization.

136140005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27228006.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 136140005 is about 11667.9049104799. The cubic root of 136140005 is about 514.4327244152.

Adding to 136140005 its reverse (500041631), we get a palindrome (636181636).

The spelling of 136140005 in words is "one hundred thirty-six million, one hundred forty thousand, five".