42173205 has 16 divisors (see below), whose sum is σ = 67564800. Its totient is φ = 22463168.

The previous prime is 42173189. The next prime is 42173231. The reversal of 42173205 is 50237124.

It is a cyclic number.

It is not a de Polignac number, because 42173205 - 2⁴ = 42173189 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15271 + ... + 17819.

It is an arithmetic number, because the mean of its divisors is an integer number (4222800).

Almost surely, 2^42173205 is an apocalyptic number.

It is an amenable number.

42173205 is a deficient number, since it is larger than the sum of its proper divisors (25391595).

42173205 is a wasteful number, since it uses less digits than its factorization.

42173205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3660.

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

The square root of 42173205 is about 6494.0900055358. The cubic root of 42173205 is about 348.0798386643.

The spelling of 42173205 in words is "forty-two million, one hundred seventy-three thousand, two hundred five".