136141321 has 4 divisors (see below), whose sum is σ = 144149652. Its totient is φ = 128132992.

The previous prime is 136141309. The next prime is 136141339. The reversal of 136141321 is 123141631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 123141631 = 53 ⋅2323427.

It can be written as a sum of positive squares in 2 ways, for example, as 124992400 + 11148921 = 11180^2 + 3339^2 .

It is a cyclic number.

It is not a de Polignac number, because 136141321 - 2⁷ = 136141193 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 136141292 and 136141301.

It is not an unprimeable number, because it can be changed into a prime (136141351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4004140 + ... + 4004173.

It is an arithmetic number, because the mean of its divisors is an integer number (36037413).

Almost surely, 2^136141321 is an apocalyptic number.

It is an amenable number.

136141321 is a deficient number, since it is larger than the sum of its proper divisors (8008331).

136141321 is an equidigital number, since it uses as much as digits as its factorization.

136141321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8008330.

The product of its digits is 432, while the sum is 22.

The square root of 136141321 is about 11667.9613043582. The cubic root of 136141321 is about 514.4343820012.

Adding to 136141321 its reverse (123141631), we get a palindrome (259282952).

The spelling of 136141321 in words is "one hundred thirty-six million, one hundred forty-one thousand, three hundred twenty-one".