136215145 has 12 divisors (see below), whose sum is σ = 179669700. Its totient is φ = 99065120.

The previous prime is 136215119. The next prime is 136215151. The reversal of 136215145 is 541512631.

136215145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 62031376 + 74183769 = 7876^2 + 8613^2 .

It is not a de Polignac number, because 136215145 - 2²¹ = 134117993 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 111970 + ... + 113179.

It is an arithmetic number, because the mean of its divisors is an integer number (14972475).

Almost surely, 2^136215145 is an apocalyptic number.

It is an amenable number.

136215145 is a deficient number, since it is larger than the sum of its proper divisors (43454555).

136215145 is a wasteful number, since it uses less digits than its factorization.

136215145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225176 (or 225165 counting only the distinct ones).

The product of its digits is 3600, while the sum is 28.

The square root of 136215145 is about 11671.1244102700. The cubic root of 136215145 is about 514.5273509373.

Adding to 136215145 its reverse (541512631), we get a palindrome (677727776).

The spelling of 136215145 in words is "one hundred thirty-six million, two hundred fifteen thousand, one hundred forty-five".