42223309 has 4 divisors (see below), whose sum is σ = 42555904. Its totient is φ = 41890716.

The previous prime is 42223303. The next prime is 42223361. The reversal of 42223309 is 90332224.

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 42223309 - 2⁵ = 42223277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42223303) 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, 166107 + ... + 166360.

It is an arithmetic number, because the mean of its divisors is an integer number (10638976).

Almost surely, 2^42223309 is an apocalyptic number.

It is an amenable number.

42223309 is a deficient number, since it is larger than the sum of its proper divisors (332595).

42223309 is a wasteful number, since it uses less digits than its factorization.

42223309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332594.

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 42223309 is about 6497.9465217867. The cubic root of 42223309 is about 348.2176298690.

The spelling of 42223309 in words is "forty-two million, two hundred twenty-three thousand, three hundred nine".