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173142 = 2329619
BaseRepresentation
bin101010010001010110
322210111200
4222101112
521020032
63413330
71320534
oct522126
9283450
10173142
111090a2
1284246
1360a68
1447154
153647c
hex2a456

173142 has 12 divisors (see below), whose sum is σ = 375180. Its totient is φ = 57708.

The previous prime is 173141. The next prime is 173149. The reversal of 173142 is 241371.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 9619 = 173142 / (1 + 7 + 3 + 1 + 4 + 2).

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 173142.

It is not an unprimeable number, because it can be changed into a prime (173141) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4792 + ... + 4827.

It is an arithmetic number, because the mean of its divisors is an integer number (31265).

2173142 is an apocalyptic number.

173142 is an abundant number, since it is smaller than the sum of its proper divisors (202038).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

173142 is a wasteful number, since it uses less digits than its factorization.

173142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9627 (or 9624 counting only the distinct ones).

The product of its digits is 168, while the sum is 18.

The square root of 173142 is about 416.1033525460. The cubic root of 173142 is about 55.7357876995.

The spelling of 173142 in words is "one hundred seventy-three thousand, one hundred forty-two", and thus it is an iban number.

Divisors: 1 2 3 6 9 18 9619 19238 28857 57714 86571 173142