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130427081 is a prime number
BaseRepresentation
bin1111100011000…
…10100011001001
3100002102101022122
413301202203021
5231342131311
620535301025
73142416611
oct761424311
9302371278
10130427081
1167693884
123781a775
1321037cb5
1413471a41
15b6b50db
hex7c628c9

130427081 has 2 divisors, whose sum is σ = 130427082. Its totient is φ = 130427080.

The previous prime is 130427053. The next prime is 130427083. The reversal of 130427081 is 180724031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 90535225 + 39891856 = 9515^2 + 6316^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-130427081 is a prime.

It is a super-2 number, since 2×1304270812 = 34022446916361122, which contains 22 as substring.

Together with 130427083, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 130427081.

It is not a weakly prime, because it can be changed into another prime (130427083) 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 as a sum of consecutive naturals, namely, 65213540 + 65213541.

It is an arithmetic number, because the mean of its divisors is an integer number (65213541).

Almost surely, 2130427081 is an apocalyptic number.

It is an amenable number.

130427081 is a deficient number, since it is larger than the sum of its proper divisors (1).

130427081 is an equidigital number, since it uses as much as digits as its factorization.

130427081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 130427081 is about 11420.4676349088. The cubic root of 130427081 is about 507.1338405667.

The spelling of 130427081 in words is "one hundred thirty million, four hundred twenty-seven thousand, eighty-one".