20134171 has 4 divisors (see below), whose sum is σ = 21318552. Its totient is φ = 18949792.

The previous prime is 20134139. The next prime is 20134183. The reversal of 20134171 is 17143102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17143102 = 2 ⋅8571551.

It is a cyclic number.

It is not a de Polignac number, because 20134171 - 2⁵ = 20134139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20134111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 592165 + ... + 592198.

It is an arithmetic number, because the mean of its divisors is an integer number (5329638).

Almost surely, 2^20134171 is an apocalyptic number.

20134171 is a deficient number, since it is larger than the sum of its proper divisors (1184381).

20134171 is a wasteful number, since it uses less digits than its factorization.

20134171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1184380.

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 20134171 is about 4487.1116545056. Note that the first 3 decimals coincide. The cubic root of 20134171 is about 272.0474028903.

Adding to 20134171 its reverse (17143102), we get a palindrome (37277273).

The spelling of 20134171 in words is "twenty million, one hundred thirty-four thousand, one hundred seventy-one".