3142
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
- 4
- Divisor Sum
- 4716
- Proper Divisor Sum (Aliquot Sum)
- 1574
- 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
- 1570
- Möbius Function
- 1
- Radical
- 3142
- 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
- 123
- 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
- yes
- Odd
- no
Appears in sequences
- Coordination sequence T5 for Zeolite Code PAU.at n=41A008223
- Coordination sequence T5 for Zeolite Code RUT.at n=37A009901
- Decimal expansion of Pi rounded to n places.at n=3A011546
- Numbers k such that the continued fraction for sqrt(k) has period 42.at n=31A020381
- Number of positive integers that are not the sum of distinct n-th-order polygonal numbers.at n=28A025524
- Sequence satisfies T^2(a)=a, where T is defined below.at n=42A027588
- Decimal representation of permutations of lengths 1, 2, 3, ... arranged lexicographically.at n=22A030299
- Numbers k such that the continued fraction for sqrt(k) has even period and if the last term of the periodic part is deleted the central term is 56.at n=1A031554
- Triangular array associated with Schroeder numbers.at n=49A033878
- Coefficients of completely replicable function 50a with a(0) = 1.at n=49A034320
- Number of partitions of n with equal number of parts congruent to each of 2 and 3 (mod 4).at n=37A035545
- Positive numbers having the same set of digits in base 6 and base 10.at n=13A037437
- Coordination sequence T5 for Zeolite Code SFF.at n=37A038436
- (s(n)+7)/10, where s(n)=n-th base 10 palindrome that starts with 3.at n=36A043082
- Numbers n such that string 4,2 occurs in the base 10 representation of n but not of n-1.at n=34A044374
- Numbers n such that string 4,2 occurs in the base 10 representation of n but not of n+1.at n=34A044755
- Numbers whose base-5 representation contains exactly three 0's and one 1.at n=28A045170
- Numbers whose base-5 representation contains exactly three 0's and one 2.at n=29A045185
- Numbers whose base-5 representation contains exactly three 0's and one 3.at n=28A045200
- McKay-Thompson series of class 50a for Monster.at n=49A058703