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242065 = 548413
BaseRepresentation
bin111011000110010001
3110022001101
4323012101
530221230
65104401
72025505
oct730621
9408041
10242065
1115595a
12b8101
1386245
1464305
154baca
hex3b191

242065 has 4 divisors (see below), whose sum is σ = 290484. Its totient is φ = 193648.

The previous prime is 242059. The next prime is 242069. The reversal of 242065 is 560242.

242065 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 4922+1.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 560242 = 2280121.

It can be written as a sum of positive squares in 2 ways, for example, as 87616 + 154449 = 296^2 + 393^2 .

It is a cyclic number.

It is not a de Polignac number, because 242065 - 23 = 242057 is a prime.

It is a d-powerful number, because it can be written as 215 + 43 + 0 + 217 + 62 + 57 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24202 + ... + 24211.

It is an arithmetic number, because the mean of its divisors is an integer number (72621).

2242065 is an apocalyptic number.

It is an amenable number.

242065 is a deficient number, since it is larger than the sum of its proper divisors (48419).

242065 is an equidigital number, since it uses as much as digits as its factorization.

242065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48418.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 242065 is about 492.0010162591. The cubic root of 242065 is about 62.3223756718.

It can be divided in two parts, 2420 and 65, that added together give a triangular number (2485 = T70).

The spelling of 242065 in words is "two hundred forty-two thousand, sixty-five".

Divisors: 1 5 48413 242065