42221432 has 32 divisors (see below), whose sum is σ = 86832000. Its totient is φ = 19087200.

The previous prime is 42221407. The next prime is 42221437. The reversal of 42221432 is 23412224.

42221432 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 (42221437) 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, 16307 + ... + 18717.

It is an arithmetic number, because the mean of its divisors is an integer number (2713500).

Almost surely, 2^42221432 is an apocalyptic number.

It is an amenable number.

42221432 is an abundant number, since it is smaller than the sum of its proper divisors (44610568).

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

42221432 is a wasteful number, since it uses less digits than its factorization.

42221432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2627 (or 2623 counting only the distinct ones).

The product of its digits is 768, while the sum is 20.

The square root of 42221432 is about 6497.8020899378. The cubic root of 42221432 is about 348.2124698899.

Adding to 42221432 its reverse (23412224), we get a palindrome (65633656).

The spelling of 42221432 in words is "forty-two million, two hundred twenty-one thousand, four hundred thirty-two".