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242165 = 57111737
BaseRepresentation
bin111011000111110101
3110022012002
4323013311
530222130
65105045
72026010
oct730765
9408162
10242165
11155a40
12b8185
13862c1
1464377
154bb45
hex3b1f5

242165 has 32 divisors (see below), whose sum is σ = 393984. Its totient is φ = 138240.

The previous prime is 242161. The next prime is 242171. The reversal of 242165 is 561242.

242165 = 252 + 262 + ... + 902.

It is a happy number.

It is not a de Polignac number, because 242165 - 22 = 242161 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242161) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6527 + ... + 6563.

It is an arithmetic number, because the mean of its divisors is an integer number (12312).

2242165 is an apocalyptic number.

It is an amenable number.

242165 is a deficient number, since it is larger than the sum of its proper divisors (151819).

242165 is a wasteful number, since it uses less digits than its factorization.

242165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77.

The product of its digits is 480, while the sum is 20.

The square root of 242165 is about 492.1026315719. The cubic root of 242165 is about 62.3309565344.

The spelling of 242165 in words is "two hundred forty-two thousand, one hundred sixty-five".

Divisors: 1 5 7 11 17 35 37 55 77 85 119 185 187 259 385 407 595 629 935 1295 1309 2035 2849 3145 4403 6545 6919 14245 22015 34595 48433 242165