139245 has 8 divisors (see below), whose sum is σ = 222816. Its totient is φ = 74256.

The previous prime is 139241. The next prime is 139267. The reversal of 139245 is 542931.

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

It is not a de Polignac number, because 139245 - 2² = 139241 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139241) 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, 4627 + ... + 4656.

It is an arithmetic number, because the mean of its divisors is an integer number (27852).

2¹³⁹²⁴⁵ is an apocalyptic number.

139245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

139245 is a deficient number, since it is larger than the sum of its proper divisors (83571).

139245 is an equidigital number, since it uses as much as digits as its factorization.

139245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9291.

The product of its digits is 1080, while the sum is 24.

The square root of 139245 is about 373.1554635805. The cubic root of 139245 is about 51.8314314589.

The spelling of 139245 in words is "one hundred thirty-nine thousand, two hundred forty-five".