221042339 has 8 divisors (see below), whose sum is σ = 255224928. Its totient is φ = 187511040.

The previous prime is 221042309. The next prime is 221042377. The reversal of 221042339 is 933240122.

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 221042339 - 2⁸ = 221042083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221042309) 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, 162092 + ... + 163449.

It is an arithmetic number, because the mean of its divisors is an integer number (31903116).

Almost surely, 2^221042339 is an apocalyptic number.

221042339 is a deficient number, since it is larger than the sum of its proper divisors (34182589).

221042339 is an equidigital number, since it uses as much as digits as its factorization.

221042339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325645.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 221042339 is about 14867.4926937934. The cubic root of 221042339 is about 604.6329663676.

The spelling of 221042339 in words is "two hundred twenty-one million, forty-two thousand, three hundred thirty-nine".