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171142 = 285571
BaseRepresentation
bin101001110010000110
322200202121
4221302012
520434032
63400154
71311646
oct516206
9280677
10171142
11107644
128305a
135cb8a
1446526
1535a97
hex29c86

171142 has 4 divisors (see below), whose sum is σ = 256716. Its totient is φ = 85570.

The previous prime is 171131. The next prime is 171161. The reversal of 171142 is 241171.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

171142 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42784 + ... + 42787.

It is an arithmetic number, because the mean of its divisors is an integer number (64179).

2171142 is an apocalyptic number.

171142 is a deficient number, since it is larger than the sum of its proper divisors (85574).

171142 is an equidigital number, since it uses as much as digits as its factorization.

171142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85573.

The product of its digits is 56, while the sum is 16.

The square root of 171142 is about 413.6931229789. The cubic root of 171142 is about 55.5203507329.

It can be divided in two parts, 171 and 142, that added together give a palindrome (313).

The spelling of 171142 in words is "one hundred seventy-one thousand, one hundred forty-two", and thus it is an iban number.

Divisors: 1 2 85571 171142