172043205 has 8 divisors (see below), whose sum is σ = 275269152. Its totient is φ = 91756368.

The previous prime is 172043173. The next prime is 172043227. The reversal of 172043205 is 502340271.

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

It is not a de Polignac number, because 172043205 - 2⁵ = 172043173 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5734759 + ... + 5734788.

It is an arithmetic number, because the mean of its divisors is an integer number (34408644).

Almost surely, 2^172043205 is an apocalyptic number.

172043205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

172043205 is a deficient number, since it is larger than the sum of its proper divisors (103225947).

172043205 is a wasteful number, since it uses less digits than its factorization.

172043205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11469555.

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 172043205 is about 13116.5241203605. The cubic root of 172043205 is about 556.1763378448.

Adding to 172043205 its reverse (502340271), we get a palindrome (674383476).

The spelling of 172043205 in words is "one hundred seventy-two million, forty-three thousand, two hundred five".