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42745 = 583103
BaseRepresentation
bin1010011011111001
32011122011
422123321
52331440
6525521
7235423
oct123371
964564
1042745
112a12a
12208a1
13165c1
1411813
15c9ea
hexa6f9

42745 has 8 divisors (see below), whose sum is σ = 52416. Its totient is φ = 33456.

The previous prime is 42743. The next prime is 42751. The reversal of 42745 is 54724.

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 42745 - 21 = 42743 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42743) 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, 364 + ... + 466.

It is an arithmetic number, because the mean of its divisors is an integer number (6552).

242745 is an apocalyptic number.

It is an amenable number.

42745 is a deficient number, since it is larger than the sum of its proper divisors (9671).

42745 is a wasteful number, since it uses less digits than its factorization.

42745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191.

The product of its digits is 1120, while the sum is 22.

The square root of 42745 is about 206.7486396570. The cubic root of 42745 is about 34.9645900377.

It can be divided in two parts, 42 and 745, that added together give a palindrome (787).

The spelling of 42745 in words is "forty-two thousand, seven hundred forty-five".

Divisors: 1 5 83 103 415 515 8549 42745