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71420301 = 3229273641
BaseRepresentation
bin1000100000111…
…00100110001101
311222101112020100
410100130212031
5121240422201
611030441313
71525030311
oct420344615
9158345210
1071420301
1137351147
121bb03239
1311a48144
1496b1b41
15640b886
hex441c98d

71420301 has 12 divisors (see below), whose sum is σ = 106720380. Its totient is φ = 45971520.

The previous prime is 71420299. The next prime is 71420317. The reversal of 71420301 is 10302417.

It can be written as a sum of positive squares in 2 ways, for example, as 37197801 + 34222500 = 6099^2 + 5850^2 .

It is not a de Polignac number, because 71420301 - 21 = 71420299 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71420341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 136560 + ... + 137081.

It is an arithmetic number, because the mean of its divisors is an integer number (8893365).

Almost surely, 271420301 is an apocalyptic number.

It is an amenable number.

71420301 is a deficient number, since it is larger than the sum of its proper divisors (35300079).

71420301 is a wasteful number, since it uses less digits than its factorization.

71420301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273676 (or 273673 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 71420301 is about 8451.0532479686. The cubic root of 71420301 is about 414.8972523492.

Adding to 71420301 its reverse (10302417), we get a palindrome (81722718).

The spelling of 71420301 in words is "seventy-one million, four hundred twenty thousand, three hundred one".

Divisors: 1 3 9 29 87 261 273641 820923 2462769 7935589 23806767 71420301