136235269 has 4 divisors (see below), whose sum is σ = 136259244. Its totient is φ = 136211296.

The previous prime is 136235257. The next prime is 136235293. The reversal of 136235269 is 962532631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 962532631 = 103 ⋅9344977.

It can be written as a sum of positive squares in 2 ways, for example, as 20930625 + 115304644 = 4575^2 + 10738^2 .

It is a cyclic number.

It is not a de Polignac number, because 136235269 - 2²¹ = 134138117 is a prime.

It is a super-2 number, since 2×136235269² = 37120097039004722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136235249) 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, 1899 + ... + 16615.

It is an arithmetic number, because the mean of its divisors is an integer number (34064811).

Almost surely, 2^136235269 is an apocalyptic number.

It is an amenable number.

136235269 is a deficient number, since it is larger than the sum of its proper divisors (23975).

136235269 is an equidigital number, since it uses as much as digits as its factorization.

136235269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23974.

The product of its digits is 58320, while the sum is 37.

The square root of 136235269 is about 11671.9865061608. The cubic root of 136235269 is about 514.5526879107.

The spelling of 136235269 in words is "one hundred thirty-six million, two hundred thirty-five thousand, two hundred sixty-nine".