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68013123 = 370132341
BaseRepresentation
bin1000000110111…
…00110001000011
311201222102110120
410003130301003
5114402404443
610425431323
71454046663
oct403346103
9151872416
1068013123
11354342a2
121a93b543
1311124369
1490661a3
155e87083
hex40dcc43

68013123 has 8 divisors (see below), whose sum is σ = 90816336. Its totient is φ = 45276000.

The previous prime is 68013083. The next prime is 68013133. The reversal of 68013123 is 32131086.

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

It is not a de Polignac number, because 68013123 - 213 = 68004931 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 68013093 and 68013102.

It is not an unprimeable number, because it can be changed into a prime (68013133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14068 + ... + 18273.

It is an arithmetic number, because the mean of its divisors is an integer number (11352042).

Almost surely, 268013123 is an apocalyptic number.

68013123 is a deficient number, since it is larger than the sum of its proper divisors (22803213).

68013123 is a wasteful number, since it uses less digits than its factorization.

68013123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33045.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 68013123 is about 8247.0069116013. The cubic root of 68013123 is about 408.1917651499.

The spelling of 68013123 in words is "sixty-eight million, thirteen thousand, one hundred twenty-three".

Divisors: 1 3 701 2103 32341 97023 22671041 68013123