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220042 = 2269409
BaseRepresentation
bin110101101110001010
3102011211201
4311232022
524020132
64414414
71604344
oct655612
9364751
10220042
11140359
12a740a
1379204
145a294
15452e7
hex35b8a

220042 has 8 divisors (see below), whose sum is σ = 332100. Its totient is φ = 109344.

The previous prime is 220021. The next prime is 220057. The reversal of 220042 is 240022.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 219961 + 81 = 469^2 + 9^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 334 + ... + 742.

2220042 is an apocalyptic number.

220042 is a deficient number, since it is larger than the sum of its proper divisors (112058).

220042 is a wasteful number, since it uses less digits than its factorization.

220042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 680.

The product of its (nonzero) digits is 32, while the sum is 10.

The square root of 220042 is about 469.0863459961. The cubic root of 220042 is about 60.3719487304.

Adding to 220042 its reverse (240022), we get a palindrome (460064).

The spelling of 220042 in words is "two hundred twenty thousand, forty-two", and thus it is an iban number.

Divisors: 1 2 269 409 538 818 110021 220042