Base | Representation |
---|---|
bin | 1110100011110… |
… | …01001011000111 |
3 | 22111210220102200 |
4 | 13101321023013 |
5 | 222231144033 |
6 | 20041405543 |
7 | 3012045321 |
oct | 721711307 |
9 | 274726380 |
10 | 122131143 |
11 | 62a37a32 |
12 | 34a998b3 |
13 | 1c3c1c64 |
14 | 12312611 |
15 | aac7013 |
hex | 74792c7 |
122131143 has 12 divisors (see below), whose sum is σ = 176810400. Its totient is φ = 81236736.
The previous prime is 122131129. The next prime is 122131157. The reversal of 122131143 is 341131221.
It is an interprime number because it is at equal distance from previous prime (122131129) and next prime (122131157).
It is not a de Polignac number, because 122131143 - 28 = 122130887 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (122131123) by changing a digit.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11071 + ... + 19152.
It is an arithmetic number, because the mean of its divisors is an integer number (14734200).
Almost surely, 2122131143 is an apocalyptic number.
122131143 is a deficient number, since it is larger than the sum of its proper divisors (54679257).
122131143 is a wasteful number, since it uses less digits than its factorization.
122131143 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 30678 (or 30675 counting only the distinct ones).
The product of its digits is 144, while the sum is 18.
The square root of 122131143 is about 11051.2959873492. The cubic root of 122131143 is about 496.1452149710.
Adding to 122131143 its reverse (341131221), we get a palindrome (463262364).
The spelling of 122131143 in words is "one hundred twenty-two million, one hundred thirty-one thousand, one hundred forty-three".
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