220142209 has 8 divisors (see below), whose sum is σ = 254034560. Its totient is φ = 186860736.

The previous prime is 220142203. The next prime is 220142287. The reversal of 220142209 is 902241022.

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 220142209 - 2³ = 220142201 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 220142209.

It is not an unprimeable number, because it can be changed into a prime (220142201) 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, 151944 + ... + 153385.

It is an arithmetic number, because the mean of its divisors is an integer number (31754320).

Almost surely, 2^220142209 is an apocalyptic number.

It is an amenable number.

220142209 is a deficient number, since it is larger than the sum of its proper divisors (33892351).

220142209 is a wasteful number, since it uses less digits than its factorization.

220142209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305439.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 220142209 is about 14837.1900641597. The cubic root of 220142209 is about 603.8111197264.

The spelling of 220142209 in words is "two hundred twenty million, one hundred forty-two thousand, two hundred nine".