## Karl Weierstrass was born on this day 201 years ago.

### Properties of the number 214239:

214239 = 3 × 71413 is semiprime and squarefree.214239 has 2 distinct prime factors, 4 divisors, 7 antidivisors and 142824 totatives.

214239 has a semiprime digit sum 21 in base 10.

214239 has a Fibonacci digit sum 21 in base 10.

214239 has a triangular digit sum 21 in base 10.

214239 = 107120

^{2}- 107119

^{2}= 35708

^{2}- 35705

^{2}is the difference of 2 nonnegative squares in 2 ways.

214239 is the difference of 2 positive pentagonal numbers in 1 way.

214239 is not the sum of 3 positive squares.

214239

^{2}= 151164

^{2}+ 151815

^{2}is the sum of 2 positive squares in 1 way.

214239

^{2}is the sum of 3 positive squares.

214239 is a divisor of 619

^{541}- 1.

214239 is an emirpimes in (at least) the following bases: 3, 5, 7, 11, 15, 21, 23, 29, 35, 43, 45, 50, 51, 52, 53, 55, 57, 58, 61, 63, 66, 69, 80, 81, 82, 83, 89, 90, 96, and 99.

214239 is palindromic in (at least) the following bases: 91, and -75.

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