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42960281 = 7132973223
BaseRepresentation
bin1010001111100…
…0010110011001
32222211121102112
42203320112121
541444212111
64132442105
71031104430
oct243702631
988747375
1042960281
1122282771
1212479335
138b920b0
1459c4117
153b88e8b
hex28f8599

42960281 has 32 divisors (see below), whose sum is σ = 55695360. Its totient is φ = 32223744.

The previous prime is 42960277. The next prime is 42960283. The reversal of 42960281 is 18206924.

42960281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42960281 - 22 = 42960277 is a prime.

It is a super-2 number, since 2×429602812 = 3691171487197922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42960283) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 192536 + ... + 192758.

It is an arithmetic number, because the mean of its divisors is an integer number (1740480).

Almost surely, 242960281 is an apocalyptic number.

It is an amenable number.

42960281 is a deficient number, since it is larger than the sum of its proper divisors (12735079).

42960281 is a wasteful number, since it uses less digits than its factorization.

42960281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 42960281 is about 6554.4092792562. The cubic root of 42960281 is about 350.2319034540.

The spelling of 42960281 in words is "forty-two million, nine hundred sixty thousand, two hundred eighty-one".

Divisors: 1 7 13 29 73 91 203 223 377 511 949 1561 2117 2639 2899 6467 6643 14819 16279 20293 27521 45269 84071 113953 192647 211627 472091 588497 1481389 3304637 6137183 42960281