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42647361 = 314215787
BaseRepresentation
bin1010001010101…
…1111101000001
32222020201011220
42202223331001
541404203421
64122025253
71025332221
oct242537501
988221156
1042647361
1122089659
1212348229
138ab2833
145942081
153b263c6
hex28abf41

42647361 has 4 divisors (see below), whose sum is σ = 56863152. Its totient is φ = 28431572.

The previous prime is 42647333. The next prime is 42647369. The reversal of 42647361 is 16374624.

It is a happy number.

42647361 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a cyclic number.

It is not a de Polignac number, because 42647361 - 25 = 42647329 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42647369) 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 3 ways as a sum of consecutive naturals, for example, 7107891 + ... + 7107896.

It is an arithmetic number, because the mean of its divisors is an integer number (14215788).

Almost surely, 242647361 is an apocalyptic number.

It is an amenable number.

42647361 is a deficient number, since it is larger than the sum of its proper divisors (14215791).

42647361 is a wasteful number, since it uses less digits than its factorization.

42647361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14215790.

The product of its digits is 24192, while the sum is 33.

The square root of 42647361 is about 6530.4946979536. The cubic root of 42647361 is about 349.3794746521.

The spelling of 42647361 in words is "forty-two million, six hundred forty-seven thousand, three hundred sixty-one".

Divisors: 1 3 14215787 42647361