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105069 = 335023
BaseRepresentation
bin11001101001101101
312100010110
4121221231
511330234
62130233
7615216
oct315155
9170113
10105069
1171a38
1250979
1338a93
142a40d
15211e9
hex19a6d

105069 has 4 divisors (see below), whose sum is σ = 140096. Its totient is φ = 70044.

The previous prime is 105037. The next prime is 105071. The reversal of 105069 is 960501.

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 not a de Polignac number, because 105069 - 25 = 105037 is a prime.

It is a super-2 number, since 2×1050692 = 22078989522, which contains 22 as substring.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105019) 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, 17509 + ... + 17514.

It is an arithmetic number, because the mean of its divisors is an integer number (35024).

2105069 is an apocalyptic number.

It is an amenable number.

105069 is a deficient number, since it is larger than the sum of its proper divisors (35027).

105069 is an equidigital number, since it uses as much as digits as its factorization.

105069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35026.

The product of its (nonzero) digits is 270, while the sum is 21.

The square root of 105069 is about 324.1434867462. The cubic root of 105069 is about 47.1872715367.

The spelling of 105069 in words is "one hundred five thousand, sixty-nine".

Divisors: 1 3 35023 105069