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42159 = 3132347
BaseRepresentation
bin1010010010101111
32010211110
422102233
52322114
6523103
7233625
oct122257
963743
1042159
1129747
1220493
1316260
1411515
15c759
hexa4af

42159 has 16 divisors (see below), whose sum is σ = 64512. Its totient is φ = 24288.

The previous prime is 42157. The next prime is 42169. The reversal of 42159 is 95124.

It is not a de Polignac number, because 42159 - 21 = 42157 is a prime.

It is a plaindrome in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42157) 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, 874 + ... + 920.

It is an arithmetic number, because the mean of its divisors is an integer number (4032).

242159 is an apocalyptic number.

42159 is a deficient number, since it is larger than the sum of its proper divisors (22353).

42159 is a wasteful number, since it uses less digits than its factorization.

42159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86.

The product of its digits is 360, while the sum is 21.

The square root of 42159 is about 205.3265691527. The cubic root of 42159 is about 34.8040753584.

It can be divided in two parts, 4215 and 9, that added together give a palindrome (4224).

The spelling of 42159 in words is "forty-two thousand, one hundred fifty-nine".

Divisors: 1 3 13 23 39 47 69 141 299 611 897 1081 1833 3243 14053 42159