Search a number
-
+
105148205 = 521029641
BaseRepresentation
bin1100100010001…
…10111100101101
321022212002012222
412101012330231
5203404220310
614233405125
72414513351
oct621067455
9238762188
10105148205
1154398448
122b2697a5
1318a26b96
14dd71461
159370055
hex6446f2d

105148205 has 4 divisors (see below), whose sum is σ = 126177852. Its totient is φ = 84118560.

The previous prime is 105148193. The next prime is 105148243. The reversal of 105148205 is 502841501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 502841501 = 975183933.

It can be written as a sum of positive squares in 2 ways, for example, as 31651876 + 73496329 = 5626^2 + 8573^2 .

It is not a de Polignac number, because 105148205 - 214 = 105131821 is a prime.

It is a super-2 number, since 2×1051482052 = 22112290029444050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10514816 + ... + 10514825.

It is an arithmetic number, because the mean of its divisors is an integer number (31544463).

Almost surely, 2105148205 is an apocalyptic number.

It is an amenable number.

105148205 is a deficient number, since it is larger than the sum of its proper divisors (21029647).

105148205 is an equidigital number, since it uses as much as digits as its factorization.

105148205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21029646.

The product of its (nonzero) digits is 1600, while the sum is 26.

The square root of 105148205 is about 10254.1798794443. The cubic root of 105148205 is about 471.9912574389.

Adding to 105148205 its reverse (502841501), we get a palindrome (607989706).

The spelling of 105148205 in words is "one hundred five million, one hundred forty-eight thousand, two hundred five".

Divisors: 1 5 21029641 105148205