222042309 has 8 divisors (see below), whose sum is σ = 296288160. Its totient is φ = 147912336.

The previous prime is 222042283. The next prime is 222042313. The reversal of 222042309 is 903240222.

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

It is not a de Polignac number, because 222042309 - 2¹⁹ = 221518021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222042319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24394 + ... + 32235.

It is an arithmetic number, because the mean of its divisors is an integer number (37036020).

Almost surely, 2^222042309 is an apocalyptic number.

It is an amenable number.

222042309 is a deficient number, since it is larger than the sum of its proper divisors (74245851).

222042309 is a wasteful number, since it uses less digits than its factorization.

222042309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57939.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 222042309 is about 14901.0841551882. The cubic root of 222042309 is about 605.5433581336.

The spelling of 222042309 in words is "two hundred twenty-two million, forty-two thousand, three hundred nine".