42224581 has 8 divisors (see below), whose sum is σ = 49379264. Its totient is φ = 35350560.

The previous prime is 42224569. The next prime is 42224591. The reversal of 42224581 is 18542224.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42224581 - 2⁷ = 42224453 is a prime.

It is a super-2 number, since 2×42224581² = 3565830481251122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42224591) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 69840 + ... + 70441.

It is an arithmetic number, because the mean of its divisors is an integer number (6172408).

Almost surely, 2^42224581 is an apocalyptic number.

It is an amenable number.

42224581 is a deficient number, since it is larger than the sum of its proper divisors (7154683).

42224581 is a wasteful number, since it uses less digits than its factorization.

42224581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140331.

The product of its digits is 5120, while the sum is 28.

The square root of 42224581 is about 6498.0443981247. The cubic root of 42224581 is about 348.2211265820.

The spelling of 42224581 in words is "forty-two million, two hundred twenty-four thousand, five hundred eighty-one".