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581042 = 274112
BaseRepresentation
bin10001101110110110010
31002112001002
42031312302
5122043132
620242002
74640000
oct2156662
91075032
10581042
11367600
12240302
13174617
14111a70
15b7262
hex8ddb2

581042 has 30 divisors (see below), whose sum is σ = 1117599. Its totient is φ = 226380.

The previous prime is 581041. The next prime is 581047. The reversal of 581042 is 240185.

It can be written as a sum of positive squares in only one way, i.e., 290521 + 290521 = 539^2 + 539^2 .

It is an ABA number since it can be written as A⋅BA, here for A=2, B=539.

It is an Ulam number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 581042.

It is not an unprimeable number, because it can be changed into a prime (581041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 52817 + ... + 52827.

2581042 is an apocalyptic number.

581042 is a deficient number, since it is larger than the sum of its proper divisors (536557).

581042 is an equidigital number, since it uses as much as digits as its factorization.

581042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52 (or 20 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 581042 is about 762.2611101191. The cubic root of 581042 is about 83.4454207250.

The spelling of 581042 in words is "five hundred eighty-one thousand, forty-two".

Divisors: 1 2 7 11 14 22 49 77 98 121 154 242 343 539 686 847 1078 1694 2401 3773 4802 5929 7546 11858 26411 41503 52822 83006 290521 581042