42233581 has 8 divisors (see below), whose sum is σ = 45662904. Its totient is φ = 38830080.

The previous prime is 42233579. The next prime is 42233591. The reversal of 42233581 is 18533224.

It can be written as a sum of positive squares in 4 ways, for example, as 837225 + 41396356 = 915^2 + 6434^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 42233581 - 2¹ = 42233579 is a prime.

It is a super-2 number, since 2×42233581² = 3567350728167122, 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 (42233591) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2980 + ... + 9661.

It is an arithmetic number, because the mean of its divisors is an integer number (5707863).

Almost surely, 2^42233581 is an apocalyptic number.

It is an amenable number.

42233581 is a deficient number, since it is larger than the sum of its proper divisors (3429323).

42233581 is a wasteful number, since it uses less digits than its factorization.

42233581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12911.

The product of its digits is 5760, while the sum is 28.

The square root of 42233581 is about 6498.7368772708. The cubic root of 42233581 is about 348.2458654697.

The spelling of 42233581 in words is "forty-two million, two hundred thirty-three thousand, five hundred eighty-one".