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42678471 = 3111293287
BaseRepresentation
bin1010001011001…
…1100011000111
32222022021212010
42202303203013
541411202341
64122425303
71025522013
oct242634307
988267763
1042678471
11220aaa70
1212362233
138ac3a44
14594d543
153b30716
hex28b38c7

42678471 has 8 divisors (see below), whose sum is σ = 62077824. Its totient is φ = 25865720.

The previous prime is 42678463. The next prime is 42678473. The reversal of 42678471 is 17487624.

42678471 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 42678471 - 23 = 42678463 is a prime.

It is a super-3 number, since 3×426784713 (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42678473) 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 7 ways as a sum of consecutive naturals, for example, 646611 + ... + 646676.

It is an arithmetic number, because the mean of its divisors is an integer number (7759728).

Almost surely, 242678471 is an apocalyptic number.

42678471 is a deficient number, since it is larger than the sum of its proper divisors (19399353).

42678471 is a wasteful number, since it uses less digits than its factorization.

42678471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1293301.

The product of its digits is 75264, while the sum is 39.

The square root of 42678471 is about 6532.8761659777. The cubic root of 42678471 is about 349.4644080325.

The spelling of 42678471 in words is "forty-two million, six hundred seventy-eight thousand, four hundred seventy-one".

Divisors: 1 3 11 33 1293287 3879861 14226157 42678471