139003105 has 4 divisors (see below), whose sum is σ = 166803732. Its totient is φ = 111202480.

The previous prime is 139003087. The next prime is 139003121. The reversal of 139003105 is 501300931.

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

It can be written as a sum of positive squares in 2 ways, for example, as 103469584 + 35533521 = 10172^2 + 5961^2 .

It is not a de Polignac number, because 139003105 - 2¹⁹ = 138478817 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13900306 + ... + 13900315.

It is an arithmetic number, because the mean of its divisors is an integer number (41700933).

Almost surely, 2^139003105 is an apocalyptic number.

It is an amenable number.

139003105 is a deficient number, since it is larger than the sum of its proper divisors (27800627).

139003105 is an equidigital number, since it uses as much as digits as its factorization.

139003105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27800626.

The product of its (nonzero) digits is 405, while the sum is 22.

The square root of 139003105 is about 11789.9578031476. The cubic root of 139003105 is about 518.0140038352.

The spelling of 139003105 in words is "one hundred thirty-nine million, three thousand, one hundred five".