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205130127 = 3279124499
BaseRepresentation
bin11000011101000…
…00100110001111
3112021222200122010
430032200212033
5410003131002
632204352303
75040402006
oct1416404617
9467880563
10205130127
11a5877334
1258845693
1333662397
141d359c3d
151301e46c
hexc3a098f

205130127 has 8 divisors (see below), whose sum is σ = 273616000. Its totient is φ = 136698840.

The previous prime is 205130111. The next prime is 205130141. The reversal of 205130127 is 721031502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 205130127 - 24 = 205130111 is a prime.

It is a super-2 number, since 2×2051301272 = 84156738006072258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205130227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3877 + ... + 20622.

It is an arithmetic number, because the mean of its divisors is an integer number (34202000).

Almost surely, 2205130127 is an apocalyptic number.

205130127 is a deficient number, since it is larger than the sum of its proper divisors (68485873).

205130127 is a wasteful number, since it uses less digits than its factorization.

205130127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27293.

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 205130127 is about 14322.3645743292. The cubic root of 205130127 is about 589.7615880554.

Adding to 205130127 its reverse (721031502), we get a palindrome (926161629).

The spelling of 205130127 in words is "two hundred five million, one hundred thirty thousand, one hundred twenty-seven".

Divisors: 1 3 2791 8373 24499 73497 68376709 205130127