42236321 has 4 divisors (see below), whose sum is σ = 42283200. Its totient is φ = 42189444.

The previous prime is 42236317. The next prime is 42236371. The reversal of 42236321 is 12363224.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42236321 - 2² = 42236317 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42236371) 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 3 ways as a sum of consecutive naturals, for example, 22061 + ... + 23898.

It is an arithmetic number, because the mean of its divisors is an integer number (10570800).

Almost surely, 2^42236321 is an apocalyptic number.

It is an amenable number.

42236321 is a deficient number, since it is larger than the sum of its proper divisors (46879).

42236321 is an equidigital number, since it uses as much as digits as its factorization.

42236321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46878.

The product of its digits is 1728, while the sum is 23.

The square root of 42236321 is about 6498.9476840485. The cubic root of 42236321 is about 348.2533963887.

Adding to 42236321 its reverse (12363224), we get a palindrome (54599545).

The spelling of 42236321 in words is "forty-two million, two hundred thirty-six thousand, three hundred twenty-one".