42173522 has 8 divisors (see below), whose sum is σ = 63513072. Its totient is φ = 21002500.

The previous prime is 42173519. The next prime is 42173533. The reversal of 42173522 is 22537124.

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

It is a junction number, because it is equal to n+sod(n) for n = 42173491 and 42173500.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41504 + ... + 42507.

It is an arithmetic number, because the mean of its divisors is an integer number (7939134).

Almost surely, 2^42173522 is an apocalyptic number.

42173522 is a deficient number, since it is larger than the sum of its proper divisors (21339550).

42173522 is a wasteful number, since it uses less digits than its factorization.

42173522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84264.

The product of its digits is 3360, while the sum is 26.

The square root of 42173522 is about 6494.1144122967. The cubic root of 42173522 is about 348.0807107902.

The spelling of 42173522 in words is "forty-two million, one hundred seventy-three thousand, five hundred twenty-two".