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 = 1071202 - 1071192 = 357082 - 357052 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.
2142392 = 1511642 + 1518152 is the sum of 2 positive squares in 1 way.
2142392 is the sum of 3 positive squares.
214239 is a divisor of 619541 - 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.