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139043 = 178179
BaseRepresentation
bin100001111100100011
321001201202
4201330203
513422133
62551415
71116242
oct417443
9231652
10139043
1195513
126856b
134b398
1438959
152b2e8
hex21f23

139043 has 4 divisors (see below), whose sum is σ = 147240. Its totient is φ = 130848.

The previous prime is 139033. The next prime is 139067. The reversal of 139043 is 340931.

139043 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 139043 - 212 = 134947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4073 + ... + 4106.

It is an arithmetic number, because the mean of its divisors is an integer number (36810).

2139043 is an apocalyptic number.

139043 is a deficient number, since it is larger than the sum of its proper divisors (8197).

139043 is an equidigital number, since it uses as much as digits as its factorization.

139043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8196.

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 139043 is about 372.8847006784. The cubic root of 139043 is about 51.8063557145.

Adding to 139043 its reverse (340931), we get a palindrome (479974).

The spelling of 139043 in words is "one hundred thirty-nine thousand, forty-three".

Divisors: 1 17 8179 139043