172039 has 6 divisors (see below), whose sum is σ = 200184. Its totient is φ = 147420.

The previous prime is 172031. The next prime is 172049. The reversal of 172039 is 930271.

It is not a de Polignac number, because 172039 - 2³ = 172031 is a prime.

It is a Duffinian number.

172039 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172031) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1707 + ... + 1804.

It is an arithmetic number, because the mean of its divisors is an integer number (33364).

2¹⁷²⁰³⁹ is an apocalyptic number.

172039 is a deficient number, since it is larger than the sum of its proper divisors (28145).

172039 is an equidigital number, since it uses as much as digits as its factorization.

172039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3525 (or 3518 counting only the distinct ones).

The product of its (nonzero) digits is 378, while the sum is 22.

The square root of 172039 is about 414.7758430767. The cubic root of 172039 is about 55.6171806540.

The spelling of 172039 in words is "one hundred seventy-two thousand, thirty-nine".