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42857142 = 2323310559
BaseRepresentation
bin1010001101111…
…1001010110110
32222122100221120
42203133022312
541432412032
64130324410
71030164636
oct243371266
988570846
1042857142
1122212229
1212429706
138b57173
1459986c6
153b6862c
hex28df2b6

42857142 has 16 divisors (see below), whose sum is σ = 89441280. Its totient is φ = 13664552.

The previous prime is 42857093. The next prime is 42857147. The reversal of 42857142 is 24175824.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

42857142 is a modest number, since divided by 857142 gives 42 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42857147) 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, 155142 + ... + 155417.

It is an arithmetic number, because the mean of its divisors is an integer number (5590080).

Almost surely, 242857142 is an apocalyptic number.

42857142 is an abundant number, since it is smaller than the sum of its proper divisors (46584138).

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

42857142 is a wasteful number, since it uses less digits than its factorization.

42857142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310587.

The product of its digits is 17920, while the sum is 33.

The square root of 42857142 is about 6546.5366416144. The cubic root of 42857142 is about 349.9514000546.

The spelling of 42857142 in words is "forty-two million, eight hundred fifty-seven thousand, one hundred forty-two".

Divisors: 1 2 3 6 23 46 69 138 310559 621118 931677 1863354 7142857 14285714 21428571 42857142