42442170 has 32 divisors (see below), whose sum is σ = 102211200. Its totient is φ = 11279040.

The previous prime is 42442163. The next prime is 42442171. The reversal of 42442170 is 7124424.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 42442170.

It is not an unprimeable number, because it can be changed into a prime (42442171) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7056 + ... + 11604.

It is an arithmetic number, because the mean of its divisors is an integer number (3194100).

Almost surely, 2^42442170 is an apocalyptic number.

42442170 is an abundant number, since it is smaller than the sum of its proper divisors (59769030).

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

42442170 is a wasteful number, since it uses less digits than its factorization.

42442170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4870.

The product of its (nonzero) digits is 1792, while the sum is 24.

The square root of 42442170 is about 6514.7655368401. The cubic root of 42442170 is about 348.8182456595.

Adding to 42442170 its reverse (7124424), we get a palindrome (49566594).

The spelling of 42442170 in words is "forty-two million, four hundred forty-two thousand, one hundred seventy".