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42159136579 = 723925199723
BaseRepresentation
bin100111010000111000…
…010101111101000011
311000211010212001001221
4213100320111331003
51142320214332304
631211224335511
73021512514430
oct472070257503
9130733761057
1042159136579
111697480833a
128207014597
133c8b4a7381
14207d24cb87
15116b331054
hex9d0e15f43

42159136579 has 8 divisors (see below), whose sum is σ = 48383470080. Its totient is φ = 35985203016.

The previous prime is 42159136567. The next prime is 42159136589. The reversal of 42159136579 is 97563195124.

42159136579 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 42159136579 - 211 = 42159134531 is a prime.

It is a super-5 number, since 5×421591365795 (a number of 54 digits) contains 55555 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42159136529) 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, 12598189 + ... + 12601534.

It is an arithmetic number, because the mean of its divisors is an integer number (6047933760).

Almost surely, 242159136579 is an apocalyptic number.

42159136579 is a deficient number, since it is larger than the sum of its proper divisors (6224333501).

42159136579 is a wasteful number, since it uses less digits than its factorization.

42159136579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25199969.

The product of its digits is 2041200, while the sum is 52.

The spelling of 42159136579 in words is "forty-two billion, one hundred fifty-nine million, one hundred thirty-six thousand, five hundred seventy-nine".

Divisors: 1 7 239 1673 25199723 176398061 6022733797 42159136579