427171173 has 16 divisors (see below), whose sum is σ = 669135936. Its totient is φ = 238976640.

The previous prime is 427171141. The next prime is 427171181. The reversal of 427171173 is 371171724.

It is not a de Polignac number, because 427171173 - 2⁵ = 427171141 is a prime.

It is a super-2 number, since 2×427171173² = 364950422084391858, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (427171123) 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, 497440 + ... + 498297.

It is an arithmetic number, because the mean of its divisors is an integer number (41820996).

Almost surely, 2^427171173 is an apocalyptic number.

It is an amenable number.

427171173 is a deficient number, since it is larger than the sum of its proper divisors (241964763).

427171173 is a wasteful number, since it uses less digits than its factorization.

427171173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 995764.

The product of its digits is 8232, while the sum is 33.

The square root of 427171173 is about 20668.1197257999. The cubic root of 427171173 is about 753.1254303769.

The spelling of 427171173 in words is "four hundred twenty-seven million, one hundred seventy-one thousand, one hundred seventy-three".