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42153191 = 192518839
BaseRepresentation
bin1010000011001…
…1010011100111
32221022121022022
42200303103213
541242400231
64103253355
71021203413
oct240632347
987277268
1042153191
1121881353
121214a25b
13896b922
145853d43
153a79c7b
hex28334e7

42153191 has 8 divisors (see below), whose sum is σ = 44553600. Its totient is φ = 39771000.

The previous prime is 42153187. The next prime is 42153239. The reversal of 42153191 is 19135124.

42153191 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42153191 - 22 = 42153187 is a prime.

It is a super-2 number, since 2×421531912 = 3553783022964962, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42153191.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42153121) 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 7 ways as a sum of consecutive naturals, for example, 350 + ... + 9188.

It is an arithmetic number, because the mean of its divisors is an integer number (5569200).

Almost surely, 242153191 is an apocalyptic number.

42153191 is a deficient number, since it is larger than the sum of its proper divisors (2400409).

42153191 is a wasteful number, since it uses less digits than its factorization.

42153191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9109.

The product of its digits is 1080, while the sum is 26.

The square root of 42153191 is about 6492.5488831429. The cubic root of 42153191 is about 348.0247675815.

The spelling of 42153191 in words is "forty-two million, one hundred fifty-three thousand, one hundred ninety-one".

Divisors: 1 19 251 4769 8839 167941 2218589 42153191