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42539 = 759103
BaseRepresentation
bin1010011000101011
32011100112
422120223
52330124
6524535
7235010
oct123053
964315
1042539
1129a62
122074b
1316493
1411707
15c90e
hexa62b

42539 has 8 divisors (see below), whose sum is σ = 49920. Its totient is φ = 35496.

The previous prime is 42533. The next prime is 42557. The reversal of 42539 is 93524.

42539 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42539 - 28 = 42283 is a prime.

It is an Ulam number.

It is a d-powerful number, because it can be written as 4 + 215 + 55 + 38 + 92 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42533) 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, 362 + ... + 464.

It is an arithmetic number, because the mean of its divisors is an integer number (6240).

242539 is an apocalyptic number.

42539 is a deficient number, since it is larger than the sum of its proper divisors (7381).

42539 is a wasteful number, since it uses less digits than its factorization.

42539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169.

The product of its digits is 1080, while the sum is 23.

The square root of 42539 is about 206.2498484848. The cubic root of 42539 is about 34.9083315495.

It can be divided in two parts, 425 and 39, that added together give a palindrome (464).

The spelling of 42539 in words is "forty-two thousand, five hundred thirty-nine".

Divisors: 1 7 59 103 413 721 6077 42539