1203
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 6
- Digital Root
- 6
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 1608
- Proper Divisor Sum (Aliquot Sum)
- 405
- 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
- 800
- Möbius Function
- 1
- Radical
- 1203
- 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
- 57
- 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
- Coordination sequence T1 for Zeolite Code AET.at n=24A008007
- Coordination sequence T1 for Zeolite Code APC.at n=24A008032
- Coordination sequence T1 for Zeolite Code APD.at n=23A008034
- Coordination sequence T3 for Zeolite Code ATS.at n=25A008040
- Coordination sequence T1 for Zeolite Code NON.at n=21A008212
- Exponential convolution of Fibonacci numbers with themselves (divided by 2).at n=8A014335
- Number of ordered quadruples of integers from [ 1..n ] with no global factor.at n=11A015634
- First n elements of Thue-Morse sequence A010059 read as a binary number.at n=10A019299
- Number of partitions of n into 4 unordered relatively prime parts.at n=51A023024
- Positive numbers k such that k and 2*k are anagrams in base 4 (written in base 4).at n=5A023059
- Numbers k such that Fibonacci(k) == 2 (mod k).at n=21A023174
- Number of partitions of n into distinct parts >= 3.at n=51A025148
- a(n) = floor( Sum_{1 <= i < j <= n} ((sqrt(j)-sqrt(i))^3) ).at n=20A025197
- [ Sum (s(j) - s(i))^2 ], 1 <= i < j <= n, where s(k) = 1 + 1/2 + ... + 1/k.at n=41A025216
- a(n) = T(n,[ n/2 ]), where T is the array defined in A024996.at n=11A026078
- a(n) = sum of the numbers between the two n's in A026338.at n=36A026341
- a(n) = sum of the numbers between the two n's in A026342.at n=36A026345
- a(n) = T(2*n, n), where T is given by A026584.at n=6A026590
- a(n) = T(n, floor(n/2)), where T is given by A026584.at n=12A026595
- Numbers k such that k^2 and k^3 have the same set of digits.at n=6A029797