136123005 has 8 divisors (see below), whose sum is σ = 217796832. Its totient is φ = 72598928.

The previous prime is 136123003. The next prime is 136123007. The reversal of 136123005 is 500321631.

It is an interprime number because it is at equal distance from previous prime (136123003) and next prime (136123007).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 136123005 - 2¹ = 136123003 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136123003) 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 7 ways as a sum of consecutive naturals, for example, 4537419 + ... + 4537448.

It is an arithmetic number, because the mean of its divisors is an integer number (27224604).

Almost surely, 2^136123005 is an apocalyptic number.

136123005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

136123005 is a deficient number, since it is larger than the sum of its proper divisors (81673827).

136123005 is an equidigital number, since it uses as much as digits as its factorization.

136123005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9074875.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 136123005 is about 11667.1763936267. The cubic root of 136123005 is about 514.4113108703.

Adding to 136123005 its reverse (500321631), we get a palindrome (636444636).

The spelling of 136123005 in words is "one hundred thirty-six million, one hundred twenty-three thousand, five".