136242155 has 16 divisors (see below), whose sum is σ = 189638400. Its totient is φ = 92027232.

The previous prime is 136242109. The next prime is 136242157. The reversal of 136242155 is 551242631.

It is a cyclic number.

It is not a de Polignac number, because 136242155 - 2¹⁸ = 135980011 is a prime.

It is not an unprimeable number, because it can be changed into a prime (136242157) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26705 + ... + 31394.

It is an arithmetic number, because the mean of its divisors is an integer number (11852400).

Almost surely, 2^136242155 is an apocalyptic number.

136242155 is a deficient number, since it is larger than the sum of its proper divisors (53396245).

136242155 is an equidigital number, since it uses as much as digits as its factorization.

136242155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58178.

The product of its digits is 7200, while the sum is 29.

The square root of 136242155 is about 11672.2814822125. The cubic root of 136242155 is about 514.5613571052.

Adding to 136242155 its reverse (551242631), we get a palindrome (687484786).

The spelling of 136242155 in words is "one hundred thirty-six million, two hundred forty-two thousand, one hundred fifty-five".