14141
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 11
- Digital Root
- 2
- Palindromic Number
- yes
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 14400
- Proper Divisor Sum (Aliquot Sum)
- 259
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 13884
- Möbius Function
- 1
- Radical
- 14141
- Omega Function (Ω)
- 2
- Little Omega Function (ω)
- 2
Special
- Factorial
- no
- Catalan Number
- no
- Bell Number
- no
- Motzkin Number
- no
- Primorial
- no
Figurate Numbers
- Fibonacci Number
- no
- Triangular Number
- no
- Perfect Square
- no
- Perfect Cube
- no
- Pentagonal Number
- no
- Hexagonal Number
- no
- Lucas Number
- no
- Tetrahedral Number
- no
- Pell Number
- no
- Tribonacci Number
- no
- Pronic Number
- no
Recreational
- Happy Number
- no
- Harshad Number
- no
- Narcissistic Number
- no
- Collatz Steps
- 151
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- yes
- Squarefree Number
- yes
- Prime Power
- no
- Prime Factorization
- no
- Twin Prime
- no
- Mersenne Prime
- no
- Sophie Germain Prime
- no
- Safe Prime
- no
- Powerful Number
- no
- Achilles Number
- no
- Perfect Power
- no
- Smooth Number
- no
- Carmichael Number
- no
Classification
- Even
- no
- Odd
- yes
Appears in sequences
- Odd palindromes in which parity of digits alternates.at n=40A030148
- Smallest palindromic multiple of n-th prime.at n=40A062888
- Palindromes with successive increasing difference: a(k)-a(k-1) > a(k+1)- a(k).at n=36A071250
- a(n) = concatenate(n, A010888(2*n), reverse(n)), where A010888 = digital root.at n=13A082944
- Smallest palindromic number relatively prime to all the previous terms.at n=38A083137
- Composite numbers in A083137.at n=6A083138
- Duplicate of A083829.at n=13A083455
- Palindromes k such that 3k + 1 is also a palindrome.at n=13A083829
- Palindromes n such that 4n + 1 is also a palindrome.at n=14A083831
- Palindromes with more than 3 digits in which the absolute difference of a pair of successive digits is identical.at n=15A085109
- Index of largest triangular number with n digits.at n=7A095863
- Palindromes n such that 10n01 is a prime.at n=23A099744
- Least multiple of prime(n) ending in digits of n.at n=37A114012
- Palindromic primes in base 5 (written in base 5).at n=10A117700
- Palindromic primes in base 6 (written in base 6).at n=18A117701
- Palindromic primes in base 7 (written in base 7).at n=14A117702
- Numbers k such that the k-th triangular number contains only digits {0,1,9}.at n=12A119048
- Palindromic composites such that some digit permutation is prime.at n=33A119378
- Number of infinitary amicable pairs (i,j) with i<j and i<=10^n.at n=11A126171
- Numbers n with property that n^2 is a concatenation of three 3-digit primes.at n=15A153139