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42500223 = 3253139641
BaseRepresentation
bin1010001000100…
…0000001111111
32221222020100100
42202020001333
541340001343
64114532143
71024150233
oct242100177
987866310
1042500223
1121a99057
1212297053
138a6087c
1459045c3
153ae79d3
hex288807f

42500223 has 24 divisors (see below), whose sum is σ = 63095760. Its totient is φ = 27555840.

The previous prime is 42500219. The next prime is 42500239. The reversal of 42500223 is 32200524.

It is not a de Polignac number, because 42500223 - 22 = 42500219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42500196 and 42500205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42500203) 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 23 ways as a sum of consecutive naturals, for example, 65983 + ... + 66623.

It is an arithmetic number, because the mean of its divisors is an integer number (2628990).

Almost surely, 242500223 is an apocalyptic number.

42500223 is a deficient number, since it is larger than the sum of its proper divisors (20595537).

42500223 is a wasteful number, since it uses less digits than its factorization.

42500223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 839 (or 836 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 42500223 is about 6519.2195084995. The cubic root of 42500223 is about 348.9772127113.

Adding to 42500223 its reverse (32200524), we get a palindrome (74700747).

The spelling of 42500223 in words is "forty-two million, five hundred thousand, two hundred twenty-three".

Divisors: 1 3 9 53 139 159 417 477 641 1251 1923 5769 7367 22101 33973 66303 89099 101919 267297 305757 801891 4722247 14166741 42500223