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42130030 = 2519221737
BaseRepresentation
bin1010000010110…
…1101001101110
32221021102112111
42200231221232
541241130110
64102554234
71021046035
oct240555156
987242474
1042130030
1121865a08
121213897a
138961217
14584971c
153a72e8a
hex282da6e

42130030 has 16 divisors (see below), whose sum is σ = 79825680. Its totient is φ = 15964992.

The previous prime is 42130021. The next prime is 42130061. The reversal of 42130030 is 3003124.

42130030 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 110679 + ... + 111058.

It is an arithmetic number, because the mean of its divisors is an integer number (4989105).

Almost surely, 242130030 is an apocalyptic number.

42130030 is a deficient number, since it is larger than the sum of its proper divisors (37695650).

42130030 is a wasteful number, since it uses less digits than its factorization.

42130030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221763.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 42130030 is about 6490.7649780284. The cubic root of 42130030 is about 347.9610153625.

Adding to 42130030 its reverse (3003124), we get a palindrome (45133154).

The spelling of 42130030 in words is "forty-two million, one hundred thirty thousand, thirty".

Divisors: 1 2 5 10 19 38 95 190 221737 443474 1108685 2217370 4213003 8426006 21065015 42130030