136243155 has 8 divisors (see below), whose sum is σ = 217989072. Its totient is φ = 72663008.

The previous prime is 136243141. The next prime is 136243157. The reversal of 136243155 is 551342631.

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 136243155 - 2¹⁴ = 136226771 is a prime.

It is not an unprimeable number, because it can be changed into a prime (136243157) 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, 4541424 + ... + 4541453.

It is an arithmetic number, because the mean of its divisors is an integer number (27248634).

Almost surely, 2^136243155 is an apocalyptic number.

136243155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

136243155 is a deficient number, since it is larger than the sum of its proper divisors (81745917).

136243155 is an equidigital number, since it uses as much as digits as its factorization.

136243155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9082885.

The product of its digits is 10800, while the sum is 30.

The square root of 136243155 is about 11672.3243186608. The cubic root of 136243155 is about 514.5626160403.

Adding to 136243155 its reverse (551342631), we get a palindrome (687585786).

The spelling of 136243155 in words is "one hundred thirty-six million, two hundred forty-three thousand, one hundred fifty-five".