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68042097 = 3219397907
BaseRepresentation
bin1000000111000…
…11110101110001
311202000220012200
410003203311301
5114404321342
610430213413
71454230314
oct403436561
9152026180
1068042097
1135454042
121a954269
13111345c6
14907297b
155e9094c
hex40e3d71

68042097 has 12 divisors (see below), whose sum is σ = 103456080. Its totient is φ = 42973848.

The previous prime is 68042077. The next prime is 68042099. The reversal of 68042097 is 79024086.

It is not a de Polignac number, because 68042097 - 27 = 68041969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68042099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 198783 + ... + 199124.

It is an arithmetic number, because the mean of its divisors is an integer number (8621340).

Almost surely, 268042097 is an apocalyptic number.

It is an amenable number.

68042097 is a deficient number, since it is larger than the sum of its proper divisors (35413983).

68042097 is a wasteful number, since it uses less digits than its factorization.

68042097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397932 (or 397929 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 68042097 is about 8248.7633618622. The cubic root of 68042097 is about 408.2497209709.

The spelling of 68042097 in words is "sixty-eight million, forty-two thousand, ninety-seven".

Divisors: 1 3 9 19 57 171 397907 1193721 3581163 7560233 22680699 68042097