4123
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 10
- Digital Root
- 1
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 5120
- Proper Divisor Sum (Aliquot Sum)
- 997
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Highly Composite
- no
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 3240
- Möbius Function
- -1
- Radical
- 4123
- Omega Function (Ω)
- 3
- Little Omega Function (ω)
- 3
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
- 95
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- no
- 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
- Concatenations of cyclic permutations of initial positive integers.at n=9A001292
- G.f.: (1 + x^3 + x^4 + ... + x^12 + x^15)/Product_{i=1..10} (1 - x^i).at n=24A003403
- Degrees of irreducible representations of Thompson group Th.at n=2A003916
- Pseudoprimes to base 5.at n=9A005936
- Pseudoprimes to base 6.at n=17A005937
- Coordination sequence T6 for Zeolite Code NES.at n=41A008210
- Pseudoprimes to base 25.at n=41A020153
- Pseudoprimes to base 26.at n=30A020154
- Pseudoprimes to base 30.at n=30A020158
- Pseudoprimes to base 32.at n=42A020160
- Pseudoprimes to base 36.at n=32A020164
- Pseudoprimes to base 61.at n=36A020189
- Pseudoprimes to base 67.at n=34A020195
- Pseudoprimes to base 68.at n=47A020196
- Pseudoprimes to base 87.at n=28A020215
- Pseudoprimes to base 88.at n=24A020216
- Pseudoprimes to base 92.at n=37A020220
- Pseudoprimes to base 94.at n=37A020222
- Pseudoprimes to base 99.at n=37A020227
- Strong pseudoprimes to base 25.at n=4A020251