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105642901 = 7131160911
BaseRepresentation
bin1100100101111…
…11101110010101
321100210012211001
412102333232111
5204021033101
614252143301
72421643540
oct622775625
9240705731
10105642901
11546a6091
122b467b31
1318b6b0c0
141005d857
15941b901
hex64bfb95

105642901 has 8 divisors (see below), whose sum is σ = 130022144. Its totient is φ = 83585520.

The previous prime is 105642893. The next prime is 105642923. The reversal of 105642901 is 109246501.

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

It is a cyclic number.

It is not a de Polignac number, because 105642901 - 23 = 105642893 is a prime.

It is a super-2 number, since 2×1056429012 = 22320845063391602, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 105642901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105642941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 580365 + ... + 580546.

It is an arithmetic number, because the mean of its divisors is an integer number (16252768).

Almost surely, 2105642901 is an apocalyptic number.

It is an amenable number.

105642901 is a deficient number, since it is larger than the sum of its proper divisors (24379243).

105642901 is a wasteful number, since it uses less digits than its factorization.

105642901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1160931.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 105642901 is about 10278.2732499190. The cubic root of 105642901 is about 472.7302999078.

The spelling of 105642901 in words is "one hundred five million, six hundred forty-two thousand, nine hundred one".

Divisors: 1 7 13 91 1160911 8126377 15091843 105642901