Base | Representation |
---|---|
bin | 11110010010110000000001 |
3 | 112221110011121 |
4 | 132102300001 |
5 | 4013103441 |
6 | 442112241 |
7 | 124332646 |
oct | 36226001 |
9 | 15843147 |
10 | 7941121 |
11 | 4534311 |
12 | 27ab681 |
13 | 18506b6 |
14 | 10a9dcd |
15 | a6cdd1 |
hex | 792c01 |
7941121 has 2 divisors, whose sum is σ = 7941122. Its totient is φ = 7941120.
The previous prime is 7941119. The next prime is 7941139. The reversal of 7941121 is 1211497.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 4840000 + 3101121 = 2200^2 + 1761^2 .
It is a cyclic number.
It is not a de Polignac number, because 7941121 - 21 = 7941119 is a prime.
It is a super-2 number, since 2×79411212 = 126122805473282, which contains 22 as substring.
Together with 7941119, it forms a pair of twin primes.
It is not a weakly prime, because it can be changed into another prime (7941161) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3970560 + 3970561.
It is an arithmetic number, because the mean of its divisors is an integer number (3970561).
Almost surely, 27941121 is an apocalyptic number.
It is an amenable number.
7941121 is a deficient number, since it is larger than the sum of its proper divisors (1).
7941121 is an equidigital number, since it uses as much as digits as its factorization.
7941121 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 504, while the sum is 25.
The square root of 7941121 is about 2817.9994677075. Note that the first 3 decimals coincide. The cubic root of 7941121 is about 199.5081329926.
The spelling of 7941121 in words is "seven million, nine hundred forty-one thousand, one hundred twenty-one".
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