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42068860 = 2253167853
BaseRepresentation
bin1010000001111…
…0101101111100
32221011022121221
42200132231330
541232200420
64101403124
71020402511
oct240365574
987138557
1042068860
1121823a59
12121094a4
13893c422
145831308
153a5ecaa
hex281eb7c

42068860 has 24 divisors (see below), whose sum is σ = 91195776. Its totient is φ = 16284480.

The previous prime is 42068839. The next prime is 42068867. The reversal of 42068860 is 6886024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42068867) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33307 + ... + 34546.

It is an arithmetic number, because the mean of its divisors is an integer number (3799824).

Almost surely, 242068860 is an apocalyptic number.

It is an amenable number.

42068860 is an abundant number, since it is smaller than the sum of its proper divisors (49126916).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42068860 is a wasteful number, since it uses less digits than its factorization.

42068860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67893 (or 67891 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 42068860 is about 6486.0511869704. The cubic root of 42068860 is about 347.7925283792.

The spelling of 42068860 in words is "forty-two million, sixty-eight thousand, eight hundred sixty".

Divisors: 1 2 4 5 10 20 31 62 124 155 310 620 67853 135706 271412 339265 678530 1357060 2103443 4206886 8413772 10517215 21034430 42068860