Search a number
-
+
642303 = 3323789
BaseRepresentation
bin10011100110011111111
31012122002000
42130303333
5131023203
621433343
75313414
oct2346377
91178060
10642303
113a9632
1226b853
1319647c
1412a10b
15ca4a3
hex9ccff

642303 has 8 divisors (see below), whose sum is σ = 951600. Its totient is φ = 428184.

The previous prime is 642281. The next prime is 642359. The reversal of 642303 is 303246.

It is not a de Polignac number, because 642303 - 29 = 641791 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642373) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11868 + ... + 11921.

It is an arithmetic number, because the mean of its divisors is an integer number (118950).

2642303 is an apocalyptic number.

642303 is a deficient number, since it is larger than the sum of its proper divisors (309297).

642303 is a wasteful number, since it uses less digits than its factorization.

642303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23798 (or 23792 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 642303 is about 801.4380824493. The cubic root of 642303 is about 86.2806318419.

Adding to 642303 its reverse (303246), we get a palindrome (945549).

The spelling of 642303 in words is "six hundred forty-two thousand, three hundred three".

Divisors: 1 3 9 27 23789 71367 214101 642303