Search a number
-
+
42191563 = 131322073
BaseRepresentation
bin1010000011110…
…0101011001011
32221101112221111
42200330223023
541300112223
64104151151
71021423321
oct240745313
987345844
1042191563
11218a8167
12121684b7
13898322b
145863d11
153a8630d
hex283cacb

42191563 has 4 divisors (see below), whose sum is σ = 42513768. Its totient is φ = 41869360.

The previous prime is 42191543. The next prime is 42191573. The reversal of 42191563 is 36519124.

42191563 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.

It is a cyclic number.

It is not a de Polignac number, because 42191563 - 25 = 42191531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42191543) 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, 160906 + ... + 161167.

It is an arithmetic number, because the mean of its divisors is an integer number (10628442).

Almost surely, 242191563 is an apocalyptic number.

42191563 is a deficient number, since it is larger than the sum of its proper divisors (322205).

42191563 is a wasteful number, since it uses less digits than its factorization.

42191563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322204.

The product of its digits is 6480, while the sum is 31.

The square root of 42191563 is about 6495.5032907389. The cubic root of 42191563 is about 348.1303377328.

The spelling of 42191563 in words is "forty-two million, one hundred ninety-one thousand, five hundred sixty-three".

Divisors: 1 131 322073 42191563