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42647853 = 314215951
BaseRepresentation
bin1010001010110…
…0000100101101
32222020201212010
42202230010231
541404212403
64122031433
71025333523
oct242540455
988221763
1042647853
1122089a66
1212348579
138ab2b21
145942313
153b26603
hex28ac12d

42647853 has 4 divisors (see below), whose sum is σ = 56863808. Its totient is φ = 28431900.

The previous prime is 42647851. The next prime is 42647863. The reversal of 42647853 is 35874624.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 42647853 - 21 = 42647851 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42647851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7107973 + ... + 7107978.

It is an arithmetic number, because the mean of its divisors is an integer number (14215952).

Almost surely, 242647853 is an apocalyptic number.

It is an amenable number.

42647853 is a deficient number, since it is larger than the sum of its proper divisors (14215955).

42647853 is a wasteful number, since it uses less digits than its factorization.

42647853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14215954.

The product of its digits is 161280, while the sum is 39.

The square root of 42647853 is about 6530.5323672730. The cubic root of 42647853 is about 349.3808181822.

The spelling of 42647853 in words is "forty-two million, six hundred forty-seven thousand, eight hundred fifty-three".

Divisors: 1 3 14215951 42647853