136012005 has 24 divisors (see below), whose sum is σ = 239623800. Its totient is φ = 71349120.

The previous prime is 136012003. The next prime is 136012021. The reversal of 136012005 is 500210631.

It can be written as a sum of positive squares in 4 ways, for example, as 5846724 + 130165281 = 2418^2 + 11409^2 .

It is not a de Polignac number, because 136012005 - 2¹ = 136012003 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136012003) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22030 + ... + 27519.

It is an arithmetic number, because the mean of its divisors is an integer number (9984325).

Almost surely, 2^136012005 is an apocalyptic number.

136012005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

136012005 is a deficient number, since it is larger than the sum of its proper divisors (103611795).

136012005 is a wasteful number, since it uses less digits than its factorization.

136012005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49621 (or 49618 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 136012005 is about 11662.4184884611. The cubic root of 136012005 is about 514.2714491744.

Adding to 136012005 its reverse (500210631), we get a palindrome (636222636).

The spelling of 136012005 in words is "one hundred thirty-six million, twelve thousand, five".