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42664439143 = 193125371849
BaseRepresentation
bin100111101110111111…
…111010110101100111
311002010100200001212201
4213232333322311213
51144334044023033
631333314555331
73040156514644
oct475677726547
9132110601781
1042664439143
1117103a66667
128328298b47
13403c097b81
1420ca3c4dcb
15119a89547d
hex9eeffad67

42664439143 has 8 divisors (see below), whose sum is σ = 44911998000. Its totient is φ = 40417086528.

The previous prime is 42664439141. The next prime is 42664439149. The reversal of 42664439143 is 34193446624.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42664439143 - 21 = 42664439141 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42664439093 and 42664439102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42664439141) 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, 557883 + ... + 629731.

It is an arithmetic number, because the mean of its divisors is an integer number (5613999750).

Almost surely, 242664439143 is an apocalyptic number.

42664439143 is a deficient number, since it is larger than the sum of its proper divisors (2247558857).

42664439143 is a wasteful number, since it uses less digits than its factorization.

42664439143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103121.

The product of its digits is 1492992, while the sum is 46.

The spelling of 42664439143 in words is "forty-two billion, six hundred sixty-four million, four hundred thirty-nine thousand, one hundred forty-three".

Divisors: 1 19 31253 71849 593807 1365131 2245496797 42664439143