136199247 has 4 divisors (see below), whose sum is σ = 181599000. Its totient is φ = 90799496.

The previous prime is 136199243. The next prime is 136199263. The reversal of 136199247 is 742991631.

136199247 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 742991631 = 3 ⋅247663877.

It is a cyclic number.

It is not a de Polignac number, because 136199247 - 2² = 136199243 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 136199199 and 136199208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136199243) 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, 22699872 + ... + 22699877.

It is an arithmetic number, because the mean of its divisors is an integer number (45399750).

Almost surely, 2^136199247 is an apocalyptic number.

136199247 is a deficient number, since it is larger than the sum of its proper divisors (45399753).

136199247 is an equidigital number, since it uses as much as digits as its factorization.

136199247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45399752.

The product of its digits is 81648, while the sum is 42.

The square root of 136199247 is about 11670.4433077754. The cubic root of 136199247 is about 514.5073329134.

The spelling of 136199247 in words is "one hundred thirty-six million, one hundred ninety-nine thousand, two hundred forty-seven".