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42108793997 = 432829734607
BaseRepresentation
bin100111001101111000…
…010011010010001101
311000200122010101000212
4213031320103102031
51142214322401442
631202225332205
73020331562154
oct471570232215
9130618111025
1042108793997
11169493531a6
1281b2197065
133c80c2c06a
1420766a659b
151166bd9a82
hex9cde1348d

42108793997 has 8 divisors (see below), whose sum is σ = 43090836096. Its totient is φ = 41126877792.

The previous prime is 42108793939. The next prime is 42108794027. The reversal of 42108793997 is 79939780124.

42108793997 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 a cyclic number.

It is not a de Polignac number, because 42108793997 - 228 = 41840358541 is a prime.

It is a super-3 number, since 3×421087939973 (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42108793697) 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, 1199468 + ... + 1234074.

It is an arithmetic number, because the mean of its divisors is an integer number (5386354512).

Almost surely, 242108793997 is an apocalyptic number.

It is an amenable number.

42108793997 is a deficient number, since it is larger than the sum of its proper divisors (982042099).

42108793997 is a wasteful number, since it uses less digits than its factorization.

42108793997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62947.

The product of its (nonzero) digits is 6858432, while the sum is 59.

The spelling of 42108793997 in words is "forty-two billion, one hundred eight million, seven hundred ninety-three thousand, nine hundred ninety-seven".

Divisors: 1 43 28297 34607 1216771 1488101 979274279 42108793997