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42107105 = 5431511297
BaseRepresentation
bin1010000010100…
…0000011100001
32221020021002102
42200220003201
541234411410
64102300145
71020622145
oct240500341
987207072
1042107105
112184a767
1212127655
138953961
145841225
153a6b2a5
hex28280e1

42107105 has 16 divisors (see below), whose sum is σ = 52086144. Its totient is φ = 32659200.

The previous prime is 42107029. The next prime is 42107111. The reversal of 42107105 is 50170124.

It is not a de Polignac number, because 42107105 - 28 = 42106849 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31817 + ... + 33113.

It is an arithmetic number, because the mean of its divisors is an integer number (3255384).

Almost surely, 242107105 is an apocalyptic number.

It is an amenable number.

42107105 is a deficient number, since it is larger than the sum of its proper divisors (9979039).

42107105 is a wasteful number, since it uses less digits than its factorization.

42107105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1496.

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 42107105 is about 6488.9987671443. The cubic root of 42107105 is about 347.8978897361.

Adding to 42107105 its reverse (50170124), we get a palindrome (92277229).

The spelling of 42107105 in words is "forty-two million, one hundred seven thousand, one hundred five".

Divisors: 1 5 43 151 215 755 1297 6485 6493 32465 55771 195847 278855 979235 8421421 42107105