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6140241281 is a prime number
BaseRepresentation
bin1011011011111110…
…01010010110000001
3120211220221120112202
411231333022112001
5100033400210111
62453142402545
7305106122036
oct55577122601
916756846482
106140241281
112671008179
121234430455
1376b15bb85
144236b738d
1525e0dab3b
hex16dfca581

6140241281 has 2 divisors, whose sum is σ = 6140241282. Its totient is φ = 6140241280.

The previous prime is 6140241187. The next prime is 6140241319. The reversal of 6140241281 is 1821420416.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6090397681 + 49843600 = 78041^2 + 7060^2 .

It is a cyclic number.

It is not a de Polignac number, because 6140241281 - 230 = 5066499457 is a prime.

It is a super-2 number, since 2×61402412812 = 75405125977793041922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (6140241881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3070120640 + 3070120641.

It is an arithmetic number, because the mean of its divisors is an integer number (3070120641).

Almost surely, 26140241281 is an apocalyptic number.

It is an amenable number.

6140241281 is a deficient number, since it is larger than the sum of its proper divisors (1).

6140241281 is an equidigital number, since it uses as much as digits as its factorization.

6140241281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 6140241281 is about 78359.6916852025. The cubic root of 6140241281 is about 1831.1692171752.

Adding to 6140241281 its reverse (1821420416), we get a palindrome (7961661697).

The spelling of 6140241281 in words is "six billion, one hundred forty million, two hundred forty-one thousand, two hundred eighty-one".