136442213 has 8 divisors (see below), whose sum is σ = 138581280. Its totient is φ = 134318800.

The previous prime is 136442179. The next prime is 136442239. The reversal of 136442213 is 312244631.

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 136442213 - 2⁶ = 136442149 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136442413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14306 + ... + 21852.

It is an arithmetic number, because the mean of its divisors is an integer number (17322660).

Almost surely, 2^136442213 is an apocalyptic number.

It is an amenable number.

136442213 is a deficient number, since it is larger than the sum of its proper divisors (2139067).

136442213 is a wasteful number, since it uses less digits than its factorization.

136442213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7827.

The product of its digits is 3456, while the sum is 26.

The square root of 136442213 is about 11680.8481284537. The cubic root of 136442213 is about 514.8130945852.

Adding to 136442213 its reverse (312244631), we get a palindrome (448686844).

The spelling of 136442213 in words is "one hundred thirty-six million, four hundred forty-two thousand, two hundred thirteen".