220942 has 8 divisors (see below), whose sum is σ = 337032. Its totient is φ = 108600.

The previous prime is 220939. The next prime is 220973. The reversal of 220942 is 249022.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 784 + ... + 1027.

It is an arithmetic number, because the mean of its divisors is an integer number (42129).

2²²⁰⁹⁴² is an apocalyptic number.

220942 is a deficient number, since it is larger than the sum of its proper divisors (116090).

220942 is a wasteful number, since it uses less digits than its factorization.

220942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1874.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 220942 is about 470.0446787275. The cubic root of 220942 is about 60.4541464366.

Adding to 220942 its reverse (249022), we get a palindrome (469964).

The spelling of 220942 in words is "two hundred twenty thousand, nine hundred forty-two".