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Properties of the Number 70125

Seventy Thousand One Hundred Twenty-Five

Basics

Value: 70124 → 70125 → 70126

Parity: odd

Prime: No

Previous Prime: 70123

Next Prime: 70139

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 3 × 5 3 × 11 × 17

Divisors: 1, 3, 5, 11, 15, 17, 25, 33, 51, 55

Polygonal

Triangular: Yes

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10001000111101101

Octal: 210755

Duodecimal: 346B9

Hexadecimal: 111ed

Square: 4917515625

Square Root: 264.8112535373072

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

Triangular numbers that are the product of two triangular numbers greater than 1. A188630
Triangular numbers which are products of triangular numbers larger than 1. A68143
a(n) = smaller member of n-th pair of distinct, positive, triangular numbers whose sum and difference are also triangular numbers. A185129
Row sums in A100781. A100784
Partition number array, called M32(-5), related to A013988(n,m)= |S2(-5;n,m)| ( generalized Stirling triangle). A144268
Triangular numbers T from A000217 such that (4·T+1)/13 is prime. A208294
Odd numbers that are not of the form p + 2a + 2b with b > a > 0, and p prime. A268693
Triangular numbers which are an average of four consecutive primes. A226196
Coefficients T(n,k) of xn*yn-k*zk in function A = A(x,y,z) such that A = 1 + x·B*C, B = 1 + y·C*A, and C = 1 + z·A*B, as a triangle read by rows. A323324
a(n) = m*(m+1)/2, where m = floor(n3/2). A185541