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105204245 = 5178291493
BaseRepresentation
bin1100100010101…
…00101000010101
321022221221002112
412101110220111
5203413013440
614234520405
72415135626
oct621245025
9238857075
10105204245
1154426563
122b296105
1318a46543
14dd87a4d
159381965
hex6454a15

105204245 has 16 divisors (see below), whose sum is σ = 133922160. Its totient is φ = 79064064.

The previous prime is 105204233. The next prime is 105204251. The reversal of 105204245 is 542402501.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 10745284 + 94458961 = 3278^2 + 9719^2 .

It is a cyclic number.

It is not a de Polignac number, because 105204245 - 26 = 105204181 is a prime.

It is a super-2 number, since 2×1052042452 = 22135866332040050, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 105204245.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 69719 + ... + 71211.

It is an arithmetic number, because the mean of its divisors is an integer number (8370135).

Almost surely, 2105204245 is an apocalyptic number.

It is an amenable number.

105204245 is a deficient number, since it is larger than the sum of its proper divisors (28717915).

105204245 is a wasteful number, since it uses less digits than its factorization.

105204245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2344.

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 105204245 is about 10256.9120596796. The cubic root of 105204245 is about 472.0750936852.

Adding to 105204245 its reverse (542402501), we get a palindrome (647606746).

The spelling of 105204245 in words is "one hundred five million, two hundred four thousand, two hundred forty-five".

Divisors: 1 5 17 85 829 1493 4145 7465 14093 25381 70465 126905 1237697 6188485 21040849 105204245