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106239 = 375059
BaseRepresentation
bin11001111011111111
312101201210
4121323333
511344424
62135503
7621510
oct317377
9171653
10106239
1172901
1251593
1339483
142aa07
1521729
hex19eff

106239 has 8 divisors (see below), whose sum is σ = 161920. Its totient is φ = 60696.

The previous prime is 106219. The next prime is 106243. The reversal of 106239 is 932601.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 106239 - 25 = 106207 is a prime.

It is a super-2 number, since 2×1062392 = 22573450242, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 5059 = 106239 / (1 + 0 + 6 + 2 + 3 + 9).

It is a Duffinian number.

106239 is a lucky number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (106219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2509 + ... + 2550.

It is an arithmetic number, because the mean of its divisors is an integer number (20240).

2106239 is an apocalyptic number.

106239 is a deficient number, since it is larger than the sum of its proper divisors (55681).

106239 is an equidigital number, since it uses as much as digits as its factorization.

106239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5069.

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 106239 is about 325.9432465936. The cubic root of 106239 is about 47.3617773008.

The spelling of 106239 in words is "one hundred six thousand, two hundred thirty-nine".

Divisors: 1 3 7 21 5059 15177 35413 106239