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123064517 is a prime number
BaseRepresentation
bin1110101010111…
…01000011000101
322120120022210002
413111131003011
5223001031032
620113411045
73023013452
oct725350305
9276508702
10123064517
1163515214
1235269a85
131c65aa54
14124b6829
15ac0d862
hex755d0c5

123064517 has 2 divisors, whose sum is σ = 123064518. Its totient is φ = 123064516.

The previous prime is 123064499. The next prime is 123064519. The reversal of 123064517 is 715460321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 122965921 + 98596 = 11089^2 + 314^2 .

It is an emirp because it is prime and its reverse (715460321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123064517 - 26 = 123064453 is a prime.

Together with 123064519, it forms a pair of twin primes.

It is a Chen prime.

It is a pancake number, because a pancake can be divided into 123064517 parts by 15688 straight cuts.

It is a self number, because there is not a number n which added to its sum of digits gives 123064517.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123064519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61532258 + 61532259.

It is an arithmetic number, because the mean of its divisors is an integer number (61532259).

Almost surely, 2123064517 is an apocalyptic number.

It is an amenable number.

123064517 is a deficient number, since it is larger than the sum of its proper divisors (1).

123064517 is an equidigital number, since it uses as much as digits as its factorization.

123064517 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 123064517 is about 11093.4447760829. Note that the first 3 decimals coincide. The cubic root of 123064517 is about 497.4059207809.

The spelling of 123064517 in words is "one hundred twenty-three million, sixty-four thousand, five hundred seventeen".