Properties of the Number -642212

Six Hundred Forty-Two Thousand Two Hundred Twelve

Basics

Value: -642213 → -642212 → -642211

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 2 ² × 160553

Divisors: 1, 2, 4, 160553, 321106, 642212

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: -10011100110010100100

Octal: -2346244

Duodecimal: -26B798

Hexadecimal: -9cca4

Square: 412436252944

Square Root: 801.3813074935052

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

Number of 7X2 integer matrices with each row summing to zero, row elements in nondecreasing order, rows in lexicographically nondecreasing order, and the sum of squares of the elements <= 2·n² (number of collections of 7 zero-sum 2-vectors with total modulus squared not more than 2·n², ignoring vector and component permutations). A192707