220139 has 4 divisors (see below), whose sum is σ = 227760. Its totient is φ = 212520.

The previous prime is 220123. The next prime is 220141. The reversal of 220139 is 931022.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 220139 - 2⁴ = 220123 is a prime.

It is a super-2 number, since 2×220139² = 96922358642, which contains 22 as substring.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 220139.

It is not an unprimeable number, because it can be changed into a prime (220169) 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 3 ways as a sum of consecutive naturals, for example, 3767 + ... + 3824.

It is an arithmetic number, because the mean of its divisors is an integer number (56940).

2²²⁰¹³⁹ is an apocalyptic number.

220139 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

220139 is a deficient number, since it is larger than the sum of its proper divisors (7621).

220139 is an equidigital number, since it uses as much as digits as its factorization.

220139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7620.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 220139 is about 469.1897270828. The cubic root of 220139 is about 60.3808185806.

It can be divided in two parts, 22013 and 9, that added together give a palindrome (22022).

The spelling of 220139 in words is "two hundred twenty thousand, one hundred thirty-nine".