Properties of the Number -1040400

Forty Thousand Four Hundred

Basics

Value: -1040401 → -1040400 → -1040399

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 9

Digital Root: 9

Palindrome: No

Factorization: 2 ⁴ × 3 ² × 5 ² × 17 ²

Divisors: 1, 2, 3, 4, 5, 6, 8, 9, 10, 12

Polygonal

Triangular: No

Square: Yes

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: -11111110000000010000

Octal: -3760020

Duodecimal: -422100

Hexadecimal: -fe010

Square: 1082432160000

Square Root: 1020

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

Squares whose digits are squares. A19544

a(n) = A041041(n-1)², n >= 1. A99374

Numbers n such that φ(σ(k))/σ(φ(k)) < φ(σ(n))/σ(φ(n)) for all k < n and n is the smallest positive integer with this property. A227927

Squares such that each digit is a square and the sum of the digits is a square. A61270

Non-palindromic squares whose digit reversal gives a square (possibly with fewer digits). A161902

Perfect powers k (exponent greater than 1) such that k-1 and k+1 are both semiprime. A276564

Numbers k such that (65·k)² can be represented in exactly 4 ways as the sum of a positive square and a positive fourth power. A346594

Primitives exponential abundant numbers that are not primitives exponential unitary abundant. A391086

Primitive exponential Zumkeller numbers that are not primitive exponential unitary Zumkeller numbers. A391091

Number of (n+4)X5 binary arrays with every 5X5 subblock commuting with each horizontal and vertical neighbor 5X5 subblock. A186601