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42280885 = 515753861
BaseRepresentation
bin1010000101001…
…0011110110101
32221120002110201
42201102132311
541310442020
64110120501
71022244613
oct241223665
987502421
1042280885
1121959289
12121b0131
1389b4a9a
1458886b3
153aa2a0a
hex28527b5

42280885 has 8 divisors (see below), whose sum is σ = 51061176. Its totient is φ = 33608640.

The previous prime is 42280873. The next prime is 42280891. The reversal of 42280885 is 58808224.

42280885 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 8803089 + 33477796 = 2967^2 + 5786^2 .

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

It is not a de Polignac number, because 42280885 - 223 = 33892277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26146 + ... + 27715.

It is an arithmetic number, because the mean of its divisors is an integer number (6382647).

Almost surely, 242280885 is an apocalyptic number.

It is an amenable number.

42280885 is a deficient number, since it is larger than the sum of its proper divisors (8780291).

42280885 is a wasteful number, since it uses less digits than its factorization.

42280885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54023.

The product of its (nonzero) digits is 40960, while the sum is 37.

The square root of 42280885 is about 6502.3753352140. The cubic root of 42280885 is about 348.3758353141.

The spelling of 42280885 in words is "forty-two million, two hundred eighty thousand, eight hundred eighty-five".

Divisors: 1 5 157 785 53861 269305 8456177 42280885