134128161 has 24 divisors (see below), whose sum is σ = 201825000. Its totient is φ = 85731072.

The previous prime is 134128153. The next prime is 134128187. The reversal of 134128161 is 161821431.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3825936 + 130302225 = 1956^2 + 11415^2 .

It is not a de Polignac number, because 134128161 - 2³ = 134128153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (134128121) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37165 + ... + 40613.

It is an arithmetic number, because the mean of its divisors is an integer number (8409375).

Almost surely, 2^134128161 is an apocalyptic number.

It is an amenable number.

134128161 is a deficient number, since it is larger than the sum of its proper divisors (67696839).

134128161 is a wasteful number, since it uses less digits than its factorization.

134128161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3633 (or 3630 counting only the distinct ones).

The product of its digits is 1152, while the sum is 27.

The square root of 134128161 is about 11581.3712918635. The cubic root of 134128161 is about 511.8860843266.

Adding to 134128161 its reverse (161821431), we get a palindrome (295949592).

The spelling of 134128161 in words is "one hundred thirty-four million, one hundred twenty-eight thousand, one hundred sixty-one".