Search a number
-
+
71301929 is a prime number
BaseRepresentation
bin1000011111111…
…11101100101001
311222011111212012
410033333230221
5121223130204
611024125305
71524025226
oct417775451
9158144765
1071301929
1137280216
121ba66835
1311a062ba
14968094d
1563d676e
hex43ffb29

71301929 has 2 divisors, whose sum is σ = 71301930. Its totient is φ = 71301928.

The previous prime is 71301883. The next prime is 71301931. The reversal of 71301929 is 92910317.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54096025 + 17205904 = 7355^2 + 4148^2 .

It is a cyclic number.

It is not a de Polignac number, because 71301929 - 224 = 54524713 is a prime.

Together with 71301931, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 71301895 and 71301904.

It is not a weakly prime, because it can be changed into another prime (71301949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35650964 + 35650965.

It is an arithmetic number, because the mean of its divisors is an integer number (35650965).

Almost surely, 271301929 is an apocalyptic number.

It is an amenable number.

71301929 is a deficient number, since it is larger than the sum of its proper divisors (1).

71301929 is an equidigital number, since it uses as much as digits as its factorization.

71301929 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3402, while the sum is 32.

The square root of 71301929 is about 8444.0469562882. The cubic root of 71301929 is about 414.6679087091.

The spelling of 71301929 in words is "seventy-one million, three hundred one thousand, nine hundred twenty-nine".