171434145 has 32 divisors (see below), whose sum is σ = 281571840. Its totient is φ = 89026560.

The previous prime is 171434143. The next prime is 171434189. The reversal of 171434145 is 541434171.

It is not a de Polignac number, because 171434145 - 2¹ = 171434143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (171434143) 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 31 ways as a sum of consecutive naturals, for example, 169401 + ... + 170409.

It is an arithmetic number, because the mean of its divisors is an integer number (8799120).

Almost surely, 2^171434145 is an apocalyptic number.

171434145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

171434145 is a deficient number, since it is larger than the sum of its proper divisors (110137695).

171434145 is a wasteful number, since it uses less digits than its factorization.

171434145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1305.

The product of its digits is 6720, while the sum is 30.

The square root of 171434145 is about 13093.2862567042. The cubic root of 171434145 is about 555.5192445971.

The spelling of 171434145 in words is "one hundred seventy-one million, four hundred thirty-four thousand, one hundred forty-five".