42221404 has 24 divisors (see below), whose sum is σ = 78865920. Its totient is φ = 19708416.

The previous prime is 42221383. The next prime is 42221407. The reversal of 42221404 is 40412224.

42221404 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 not an unprimeable number, because it can be changed into a prime (42221407) by changing a digit.

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, 6192 + ... + 11080.

It is an arithmetic number, because the mean of its divisors is an integer number (3286080).

Almost surely, 2^42221404 is an apocalyptic number.

It is an amenable number.

42221404 is a deficient number, since it is larger than the sum of its proper divisors (36644516).

42221404 is a wasteful number, since it uses less digits than its factorization.

42221404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5037 (or 5035 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 42221404 is about 6497.7999353627. The cubic root of 42221404 is about 348.2123929152.

Adding to 42221404 its reverse (40412224), we get a palindrome (82633628).

The spelling of 42221404 in words is "forty-two million, two hundred twenty-one thousand, four hundred four".