42543222 has 32 divisors (see below), whose sum is σ = 88571904. Its totient is φ = 13608000.

The previous prime is 42543187. The next prime is 42543269. The reversal of 42543222 is 22234524.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 42543192 and 42543201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22722 + ... + 24522.

It is an arithmetic number, because the mean of its divisors is an integer number (2767872).

Almost surely, 2^42543222 is an apocalyptic number.

42543222 is an abundant number, since it is smaller than the sum of its proper divisors (46028682).

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

42543222 is a wasteful number, since it uses less digits than its factorization.

42543222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1964.

The product of its digits is 3840, while the sum is 24.

The square root of 42543222 is about 6522.5165388828. The cubic root of 42543222 is about 349.0948639639.

Adding to 42543222 its reverse (22234524), we get a palindrome (64777746).

The spelling of 42543222 in words is "forty-two million, five hundred forty-three thousand, two hundred twenty-two".