Search a number
-
+
42558 = 2341173
BaseRepresentation
bin1010011000111110
32011101020
422120332
52330213
6525010
7235035
oct123076
964336
1042558
1129a7a
1220766
13164a9
141171c
15c923
hexa63e

42558 has 16 divisors (see below), whose sum is σ = 87696. Its totient is φ = 13760.

The previous prime is 42557. The next prime is 42569. The reversal of 42558 is 85524.

It is a super-2 number, since 2×425582 = 3622366728, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42557) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 160 + ... + 332.

It is an arithmetic number, because the mean of its divisors is an integer number (5481).

242558 is an apocalyptic number.

42558 is an abundant number, since it is smaller than the sum of its proper divisors (45138).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43848).

42558 is a wasteful number, since it uses less digits than its factorization.

42558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219.

The product of its digits is 1600, while the sum is 24.

The square root of 42558 is about 206.2959039826. The cubic root of 42558 is about 34.9135280325.

It can be divided in two parts, 42 and 558, that multiplied together give a triangular number (23436 = T216).

The spelling of 42558 in words is "forty-two thousand, five hundred fifty-eight".

Divisors: 1 2 3 6 41 82 123 173 246 346 519 1038 7093 14186 21279 42558