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42563 = 311373
BaseRepresentation
bin1010011001000011
32011101102
422121003
52330223
6525015
7235043
oct123103
964342
1042563
1129a84
122076b
13164b1
1411723
15c928
hexa643

42563 has 4 divisors (see below), whose sum is σ = 43968. Its totient is φ = 41160.

The previous prime is 42557. The next prime is 42569. The reversal of 42563 is 36524.

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 (42557) and next prime (42569).

It is a cyclic number.

It is not a de Polignac number, because 42563 - 26 = 42499 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 42563.

It is not an unprimeable number, because it can be changed into a prime (42569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 656 + ... + 717.

It is an arithmetic number, because the mean of its divisors is an integer number (10992).

242563 is an apocalyptic number.

42563 is a deficient number, since it is larger than the sum of its proper divisors (1405).

42563 is a wasteful number, since it uses less digits than its factorization.

42563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1404.

The product of its digits is 720, while the sum is 20.

The square root of 42563 is about 206.3080221417. The cubic root of 42563 is about 34.9148952710.

The spelling of 42563 in words is "forty-two thousand, five hundred sixty-three".

Divisors: 1 31 1373 42563