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230642 = 2115321
BaseRepresentation
bin111000010011110010
3102201101022
4320103302
524340032
64535442
71650266
oct702362
9381338
10230642
11148315
12b1582
1380c99
14600a6
1548512
hex384f2

230642 has 4 divisors (see below), whose sum is σ = 345966. Its totient is φ = 115320.

The previous prime is 230611. The next prime is 230647. The reversal of 230642 is 246032.

230642 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 128881 + 101761 = 359^2 + 319^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 230642.

It is not an unprimeable number, because it can be changed into a prime (230647) by changing a digit.

230642 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57659 + ... + 57662.

2230642 is an apocalyptic number.

230642 is a deficient number, since it is larger than the sum of its proper divisors (115324).

230642 is a wasteful number, since it uses less digits than its factorization.

230642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115323.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 230642 is about 480.2520171743. The cubic root of 230642 is about 61.3262108406.

Adding to 230642 its reverse (246032), we get a palindrome (476674).

The spelling of 230642 in words is "two hundred thirty thousand, six hundred forty-two".

Divisors: 1 2 115321 230642