Base | Representation |
---|---|
bin | 11111001000010100111 |
3 | 1220211021102 |
4 | 3321002213 |
5 | 230120241 |
6 | 33510315 |
7 | 11445653 |
oct | 3710247 |
9 | 1824242 |
10 | 1020071 |
11 | 637438 |
12 | 41239b |
13 | 2993c0 |
14 | 1c7a63 |
15 | 15239b |
hex | f90a7 |
1020071 has 4 divisors (see below), whose sum is σ = 1098552. Its totient is φ = 941592.
The previous prime is 1020059. The next prime is 1020077. The reversal of 1020071 is 1700201.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1700201 = 233 ⋅7297.
It is a cyclic number.
It is not a de Polignac number, because 1020071 - 26 = 1020007 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1020077) 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 3 ways as a sum of consecutive naturals, for example, 39221 + ... + 39246.
It is an arithmetic number, because the mean of its divisors is an integer number (274638).
21020071 is an apocalyptic number.
1020071 is a deficient number, since it is larger than the sum of its proper divisors (78481).
1020071 is an equidigital number, since it uses as much as digits as its factorization.
1020071 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 78480.
The product of its (nonzero) digits is 14, while the sum is 11.
The square root of 1020071 is about 1009.9856434623. The cubic root of 1020071 is about 100.6646065297.
Adding to 1020071 its reverse (1700201), we get a palindrome (2720272).
The spelling of 1020071 in words is "one million, twenty thousand, seventy-one".
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