220842139 has 8 divisors (see below), whose sum is σ = 252769248. Its totient is φ = 189009600.

The previous prime is 220842137. The next prime is 220842169. The reversal of 220842139 is 931248022.

220842139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 220842139 - 2¹ = 220842137 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 220842139.

It is not an unprimeable number, because it can be changed into a prime (220842137) 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, 18562 + ... + 28039.

It is an arithmetic number, because the mean of its divisors is an integer number (31596156).

Almost surely, 2^220842139 is an apocalyptic number.

220842139 is a deficient number, since it is larger than the sum of its proper divisors (31927109).

220842139 is an equidigital number, since it uses as much as digits as its factorization.

220842139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47285.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 220842139 is about 14860.7583588456. The cubic root of 220842139 is about 604.4503707566.

The spelling of 220842139 in words is "two hundred twenty million, eight hundred forty-two thousand, one hundred thirty-nine".