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212041 = 1712473
BaseRepresentation
bin110011110001001001
3101202212101
4303301021
523241131
64313401
71542124
oct636111
9352771
10212041
11135345
12a2861
137568b
14573bb
1542c61
hex33c49

212041 has 4 divisors (see below), whose sum is σ = 224532. Its totient is φ = 199552.

The previous prime is 212039. The next prime is 212057. The reversal of 212041 is 140212.

212041 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 156816 + 55225 = 396^2 + 235^2 .

It is a cyclic number.

It is not a de Polignac number, because 212041 - 21 = 212039 is a prime.

It is a super-2 number, since 2×2120412 = 89922771362, which contains 22 as substring.

It is a Duffinian number.

212041 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6220 + ... + 6253.

It is an arithmetic number, because the mean of its divisors is an integer number (56133).

2212041 is an apocalyptic number.

It is an amenable number.

212041 is a deficient number, since it is larger than the sum of its proper divisors (12491).

212041 is a wasteful number, since it uses less digits than its factorization.

212041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12490.

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 212041 is about 460.4790983313. The cubic root of 212041 is about 59.6311632292.

Adding to 212041 its reverse (140212), we get a palindrome (352253).

The spelling of 212041 in words is "two hundred twelve thousand, forty-one", and thus it is an iban number.

Divisors: 1 17 12473 212041