42243331 has 8 divisors (see below), whose sum is σ = 45660944. Its totient is φ = 38849760.

The previous prime is 42243281. The next prime is 42243337. The reversal of 42243331 is 13334224.

It is a happy number.

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 42243331 - 2¹³ = 42235139 is a prime.

It is a super-5 number, since 5×42243331⁵ (a number of 39 digits) contains 55555 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42243337) 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, 2265 + ... + 9466.

It is an arithmetic number, because the mean of its divisors is an integer number (5707618).

Almost surely, 2^42243331 is an apocalyptic number.

42243331 is a deficient number, since it is larger than the sum of its proper divisors (3417613).

42243331 is a wasteful number, since it uses less digits than its factorization.

42243331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12021.

The product of its digits is 1728, while the sum is 22.

The square root of 42243331 is about 6499.4869797546. The cubic root of 42243331 is about 348.2726619655.

Adding to 42243331 its reverse (13334224), we get a palindrome (55577555).

The spelling of 42243331 in words is "forty-two million, two hundred forty-three thousand, three hundred thirty-one".