133126161 has 16 divisors (see below), whose sum is σ = 204831744. Its totient is φ = 75332304.

The previous prime is 133126159. The next prime is 133126163. The reversal of 133126161 is 161621331.

It is an interprime number because it is at equal distance from previous prime (133126159) and next prime (133126163).

It is not a de Polignac number, because 133126161 - 2¹ = 133126159 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133126163) 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, 28611 + ... + 32936.

It is an arithmetic number, because the mean of its divisors is an integer number (12801984).

Almost surely, 2^133126161 is an apocalyptic number.

It is an amenable number.

133126161 is a deficient number, since it is larger than the sum of its proper divisors (71705583).

133126161 is a wasteful number, since it uses less digits than its factorization.

133126161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61660.

The product of its digits is 648, while the sum is 24.

The square root of 133126161 is about 11538.0310712010. The cubic root of 133126161 is about 510.6082209125.

Adding to 133126161 its reverse (161621331), we get a palindrome (294747492).

The spelling of 133126161 in words is "one hundred thirty-three million, one hundred twenty-six thousand, one hundred sixty-one".