1245 (number)

1245 is an odd 4-digits composite number following 1244 and preceding 1246. In scientific notation, it is written as 1.245 × 10^3. The sum of its digits is 12. It has a total of 3 prime factors and 8 positive divisors. There are 656 positive integers (up to 1245) that are relatively prime to 1245.

Interesting facts

Basic properties

Name

Name one thousand two hundred forty-five

Notation

Scientific notation 1.245 × 10^3
Engineering notation 1.245 × 10^3

Prime Factorization of 1245

Prime Factorization 5 × 3 × 83

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 1245
Product of the distinct prime numbers

The prime factorization of 1245 is 5 × 3 × 83. Since it has a total of 3 prime factors.

Most popular turbo-numbers

Basic calculations (n = 1245)

Multiplication

n×y
n×2 2490
n×3 3735
n×4 4980
n×5 6225

Division

n÷y
n÷2 622.5
n÷3 415
n÷3 311.25
n÷5 249

Exponentiation

ny
n2 1550025
n3 1929781125
n4 2402577500625
n5 2991208988278125

Nth Root

y√n
2√n 35.284557528755
3√n 10.757791359025
4√n 5.9400805995167
5√n 4.1594304830153

Divisors of 1245

1, 3, 5, 15, 83, 249, 415, 1245

8 divisors

τ Total Divisors 8
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -1244
Sum of the proper positive divisors of n
A Arithmetic Mean 0.125
Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n))
G Geometric Mean 1
Returns the nth root of the product of n divisors
H Harmonic Mean 8
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 1245 can be divided by 8 positive divisors. The sum of these divisors (counting 1245) is 1, the average is 0.125.

Base conversion 1245

Base System Value
2 Binary 10011011101
3 Ternary 1201010
4 Quaternary 103131
5 Quinary 14440
6 Senary 5433
8 Octal 2335
10 Decimal 1245
12 Duodecimal 879
16 Hexadecimal 4dd
20 Vigesimal 325
36 Base36 yl

Cryptographic Hash Functions

md5 5eac43aceba42c8757b54003a58277b5
sha1 f350d780ea8aaa48030b4db64f790c14dbcd757f
sha256 8c244b370747c1930a4e0967254778ddbb69f6a409e62beebe5f92191a09a3a1
sha512 dad0c47d949e9e8a576b80a3a90c2db5328c8848ac3213d64e95fde66cc6120f60ce7d0faf675195dc73a2905db12b5452da3f1626b28486614f5128ee7a2e09
ripemd-160 38038c5bacbf1af2829cce790ef26dbab83266f2

1245 as geometric shapes

Circle

Radius = n
Diameter 2490
Circumference 7822.5657074386
Area 4869547.1528805

Sphere

Radius = n
Volume 8083448273.7817
Surface area 19478188.611522
Circumference 7822.5657074386

Square

Length = n
Perimeter 4980
Area 1550025
Diagonal 1760.6958851545

Cube

Length = n
Surface area 9300150
Volume 1929781125
Space diagonal 2156.4032554233

Equilateral Triangle

Length = n
Perimeter 3735
Area 671180.51325049
Altitude 1078.2016277116

Triangular Pyramid

Length = n
Surface area 671180.51325049
Volume 227426886.61555
Height 586.89862838483