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42545823 = 3411911811
BaseRepresentation
bin1010001001001…
…1001010011111
32222001112220020
42202103022133
541342431243
64115523223
71024430205
oct242231237
988045806
1042545823
112201a341
12122b9513
138a78558
145917075
153b06283
hex289329f

42545823 has 16 divisors (see below), whose sum is σ = 58447872. Its totient is φ = 27512000.

The previous prime is 42545821. The next prime is 42545831. The reversal of 42545823 is 32854524.

42545823 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 42545823 - 21 = 42545821 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42545821) 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 15 ways as a sum of consecutive naturals, for example, 22588 + ... + 24398.

It is an arithmetic number, because the mean of its divisors is an integer number (3652992).

Almost surely, 242545823 is an apocalyptic number.

42545823 is a deficient number, since it is larger than the sum of its proper divisors (15902049).

42545823 is a wasteful number, since it uses less digits than its factorization.

42545823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2046.

The product of its digits is 38400, while the sum is 33.

The square root of 42545823 is about 6522.7159220680. The cubic root of 42545823 is about 349.1019781190.

The spelling of 42545823 in words is "forty-two million, five hundred forty-five thousand, eight hundred twenty-three".

Divisors: 1 3 41 123 191 573 1811 5433 7831 23493 74251 222753 345901 1037703 14181941 42545823