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42075279 = 328275653
BaseRepresentation
bin1010000010000…
…0010010001111
32221011122102200
42200200102033
541232402104
64101452543
71020430311
oct240402217
987148380
1042075279
1121828864
1212111153
13894231c
1458337b1
153a61b39
hex282048f

42075279 has 12 divisors (see below), whose sum is σ = 60859656. Its totient is φ = 28011312.

The previous prime is 42075247. The next prime is 42075301. The reversal of 42075279 is 97257024.

It is not a de Polignac number, because 42075279 - 25 = 42075247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42075379) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4617 + ... + 10269.

It is an arithmetic number, because the mean of its divisors is an integer number (5071638).

Almost surely, 242075279 is an apocalyptic number.

42075279 is a deficient number, since it is larger than the sum of its proper divisors (18784377).

42075279 is a wasteful number, since it uses less digits than its factorization.

42075279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6486 (or 6483 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 42075279 is about 6486.5459992202. The cubic root of 42075279 is about 347.8102165750.

The spelling of 42075279 in words is "forty-two million, seventy-five thousand, two hundred seventy-nine".

Divisors: 1 3 9 827 2481 5653 7443 16959 50877 4675031 14025093 42075279