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105772141 = 431245411
BaseRepresentation
bin1100100110111…
…11010001101101
321101000210002201
412103133101231
5204034202031
614255021501
72423022406
oct623372155
9241023081
10105772141
11547841a2
122b50a891
1318bb4b87
14100949ad
159444d61
hex64df46d

105772141 has 4 divisors (see below), whose sum is σ = 106017984. Its totient is φ = 105526300.

The previous prime is 105772133. The next prime is 105772157. The reversal of 105772141 is 141277501.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 105772141 - 23 = 105772133 is a prime.

It is a super-2 number, since 2×1057721412 = 22375491623447762, 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 (105772111) 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, 122275 + ... + 123136.

It is an arithmetic number, because the mean of its divisors is an integer number (26504496).

Almost surely, 2105772141 is an apocalyptic number.

It is an amenable number.

105772141 is a deficient number, since it is larger than the sum of its proper divisors (245843).

105772141 is an equidigital number, since it uses as much as digits as its factorization.

105772141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245842.

The product of its (nonzero) digits is 1960, while the sum is 28.

The square root of 105772141 is about 10284.5583765177. The cubic root of 105772141 is about 472.9229955083.

The spelling of 105772141 in words is "one hundred five million, seven hundred seventy-two thousand, one hundred forty-one".

Divisors: 1 431 245411 105772141