139345 has 12 divisors (see below), whose sum is σ = 178740. Its totient is φ = 104160.

The previous prime is 139343. The next prime is 139361. The reversal of 139345 is 543931.

It can be written as a sum of positive squares in 2 ways, for example, as 61504 + 77841 = 248^2 + 279^2 .

It is not a de Polignac number, because 139345 - 2¹ = 139343 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4480 + ... + 4510.

It is an arithmetic number, because the mean of its divisors is an integer number (14895).

2¹³⁹³⁴⁵ is an apocalyptic number.

It is an amenable number.

139345 is a deficient number, since it is larger than the sum of its proper divisors (39395).

139345 is an equidigital number, since it uses as much as digits as its factorization.

139345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96 (or 65 counting only the distinct ones).

The product of its digits is 1620, while the sum is 25.

The square root of 139345 is about 373.2894319426. The cubic root of 139345 is about 51.8438362200.

It can be divided in two parts, 139 and 345, that added together give a palindrome (484).

The spelling of 139345 in words is "one hundred thirty-nine thousand, three hundred forty-five".