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10210105 = 52042021
BaseRepresentation
bin100110111100…
…101100111001
3201012201122001
4212330230321
510103210410
61002501001
7152533033
oct46745471
921181561
1010210105
115844004
123504761
1321663a9
1414dac53
15d6a33a
hex9bcb39

10210105 has 4 divisors (see below), whose sum is σ = 12252132. Its totient is φ = 8168080.

The previous prime is 10210103. The next prime is 10210111. The reversal of 10210105 is 50101201.

It is a happy number.

10210105 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1776889 + 8433216 = 1333^2 + 2904^2 .

It is not a de Polignac number, because 10210105 - 21 = 10210103 is a prime.

It is a super-2 number, since 2×102101052 = 208492488222050, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10210091 and 10210100.

It is not an unprimeable number, because it can be changed into a prime (10210103) 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, 1021006 + ... + 1021015.

It is an arithmetic number, because the mean of its divisors is an integer number (3063033).

Almost surely, 210210105 is an apocalyptic number.

It is an amenable number.

10210105 is a deficient number, since it is larger than the sum of its proper divisors (2042027).

10210105 is an equidigital number, since it uses as much as digits as its factorization.

10210105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2042026.

The product of its (nonzero) digits is 10, while the sum is 10.

The square root of 10210105 is about 3195.3254920274. The cubic root of 10210105 is about 216.9418816942.

Adding to 10210105 its reverse (50101201), we get a palindrome (60311306).

The spelling of 10210105 in words is "ten million, two hundred ten thousand, one hundred five".

Divisors: 1 5 2042021 10210105