42206320 has 40 divisors (see below), whose sum is σ = 105680736. Its totient is φ = 15583488.

The previous prime is 42206317. The next prime is 42206321. The reversal of 42206320 is 2360224.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42206321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19252 + ... + 21331.

Almost surely, 2^42206320 is an apocalyptic number.

42206320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42206320 is an abundant number, since it is smaller than the sum of its proper divisors (63474416).

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

42206320 is a wasteful number, since it uses less digits than its factorization.

42206320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40609 (or 40603 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 42206320 is about 6496.6391311200. The cubic root of 42206320 is about 348.1709205745.

Adding to 42206320 its reverse (2360224), we get a palindrome (44566544).

The spelling of 42206320 in words is "forty-two million, two hundred six thousand, three hundred twenty".