42421422 has 16 divisors (see below), whose sum is σ = 85087440. Its totient is φ = 14099712.

The previous prime is 42421411. The next prime is 42421459. The reversal of 42421422 is 22412424.

42421422 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7897 + ... + 12132.

It is an arithmetic number, because the mean of its divisors is an integer number (5317965).

Almost surely, 2^42421422 is an apocalyptic number.

42421422 is an abundant number, since it is smaller than the sum of its proper divisors (42666018).

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

42421422 is a wasteful number, since it uses less digits than its factorization.

42421422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20387.

The product of its digits is 1024, while the sum is 21.

The square root of 42421422 is about 6513.1729594722. The cubic root of 42421422 is about 348.7613960639.

Adding to 42421422 its reverse (22412424), we get a palindrome (64833846).

The spelling of 42421422 in words is "forty-two million, four hundred twenty-one thousand, four hundred twenty-two".