136272247 has 4 divisors (see below), whose sum is σ = 140971320. Its totient is φ = 131573176.

The previous prime is 136272179. The next prime is 136272251. The reversal of 136272247 is 742272631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 742272631 = 5077 ⋅146203.

It is a cyclic number.

It is not a de Polignac number, because 136272247 - 2²⁷ = 2054519 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136272347) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2349493 + ... + 2349550.

It is an arithmetic number, because the mean of its divisors is an integer number (35242830).

Almost surely, 2^136272247 is an apocalyptic number.

136272247 is a deficient number, since it is larger than the sum of its proper divisors (4699073).

136272247 is an equidigital number, since it uses as much as digits as its factorization.

136272247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4699072.

The product of its digits is 28224, while the sum is 34.

The square root of 136272247 is about 11673.5704478107. The cubic root of 136272247 is about 514.5992382845.

The spelling of 136272247 in words is "one hundred thirty-six million, two hundred seventy-two thousand, two hundred forty-seven".