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139206 = 2323201
BaseRepresentation
bin100001111111000110
321001221210
4201333012
513423311
62552250
71116564
oct417706
9231853
10139206
1195651
1268686
134b492
1438a34
152b3a6
hex21fc6

139206 has 8 divisors (see below), whose sum is σ = 278424. Its totient is φ = 46400.

The previous prime is 139201. The next prime is 139241. The reversal of 139206 is 602931.

139206 is nontrivially palindromic in base 12.

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

139206 is an undulating number in base 12.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 139206.

It is not an unprimeable number, because it can be changed into a prime (139201) by changing a digit.

139206 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11595 + ... + 11606.

It is an arithmetic number, because the mean of its divisors is an integer number (34803).

2139206 is an apocalyptic number.

139206 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

139206 is a wasteful number, since it uses less digits than its factorization.

139206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23206.

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

The square root of 139206 is about 373.1032028809. The cubic root of 139206 is about 51.8265919923.

The spelling of 139206 in words is "one hundred thirty-nine thousand, two hundred six".

Divisors: 1 2 3 6 23201 46402 69603 139206