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204242 = 2102121
BaseRepresentation
bin110001110111010010
3101101011112
4301313102
523013432
64213322
71510313
oct616722
9341145
10204242
1112a4a5
129a242
1371c6c
145460a
15407b2
hex31dd2

204242 has 4 divisors (see below), whose sum is σ = 306366. Its totient is φ = 102120.

The previous prime is 204233. The next prime is 204251. The reversal of 204242 is 242402.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (204233) and next prime (204251).

It can be written as a sum of positive squares in only one way, i.e., 203401 + 841 = 451^2 + 29^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51059 + ... + 51062.

2204242 is an apocalyptic number.

204242 is a deficient number, since it is larger than the sum of its proper divisors (102124).

204242 is a wasteful number, since it uses less digits than its factorization.

204242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102123.

The product of its (nonzero) digits is 128, while the sum is 14.

The square root of 204242 is about 451.9314107251. The cubic root of 204242 is about 58.8909217024.

Adding to 204242 its reverse (242402), we get a palindrome (446644).

The spelling of 204242 in words is "two hundred four thousand, two hundred forty-two", and thus it is an iban number.

Divisors: 1 2 102121 204242