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42855858 = 233793627
BaseRepresentation
bin1010001101111…
…0110110110010
32222122022012000
42203132312302
541432341413
64130314430
71030161123
oct243366662
988568160
1042855858
1122211271
1212428a16
138b566c6
14599804a
153b68073
hex28dedb2

42855858 has 16 divisors (see below), whose sum is σ = 95235360. Its totient is φ = 14285268.

The previous prime is 42855847. The next prime is 42855859. The reversal of 42855858 is 85855824.

42855858 is a `hidden beast` number, since 42 + 8 + 558 + 58 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (42855859) 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, 396760 + ... + 396867.

It is an arithmetic number, because the mean of its divisors is an integer number (5952210).

Almost surely, 242855858 is an apocalyptic number.

42855858 is an abundant number, since it is smaller than the sum of its proper divisors (52379502).

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

42855858 is a wasteful number, since it uses less digits than its factorization.

42855858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 793638 (or 793632 counting only the distinct ones).

The product of its digits is 512000, while the sum is 45.

The square root of 42855858 is about 6546.4385737590. The cubic root of 42855858 is about 349.9479051716.

The spelling of 42855858 in words is "forty-two million, eight hundred fifty-five thousand, eight hundred fifty-eight".

Divisors: 1 2 3 6 9 18 27 54 793627 1587254 2380881 4761762 7142643 14285286 21427929 42855858