42173220 has 24 divisors (see below), whose sum is σ = 118085184. Its totient is φ = 11246176.

The previous prime is 42173189. The next prime is 42173231. The reversal of 42173220 is 2237124.

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, 351384 + ... + 351503.

It is an arithmetic number, because the mean of its divisors is an integer number (4920216).

Almost surely, 2^42173220 is an apocalyptic number.

It is an amenable number.

42173220 is an abundant number, since it is smaller than the sum of its proper divisors (75911964).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42173220 is a wasteful number, since it uses less digits than its factorization.

42173220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 702899 (or 702897 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 42173220 is about 6494.0911604319. The cubic root of 42173220 is about 348.0798799322.

The spelling of 42173220 in words is "forty-two million, one hundred seventy-three thousand, two hundred twenty".