Base | Representation |
---|---|
bin | 111110101111110… |
… | …0010110011101101 |
3 | 12102201201110200221 |
4 | 1331133202303231 |
5 | 13302441433122 |
6 | 544530251341 |
7 | 103113532516 |
oct | 17537426355 |
9 | 5381643627 |
10 | 2105421037 |
11 | 990500a95 |
12 | 4a9126b51 |
13 | 277268485 |
14 | 15d89ba0d |
15 | c4c886c7 |
hex | 7d7e2ced |
2105421037 has 2 divisors, whose sum is σ = 2105421038. Its totient is φ = 2105421036.
The previous prime is 2105421023. The next prime is 2105421047. The reversal of 2105421037 is 7301245012.
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., 1168204041 + 937216996 = 34179^2 + 30614^2 .
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-2105421037 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (2105421047) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1052710518 + 1052710519.
It is an arithmetic number, because the mean of its divisors is an integer number (1052710519).
Almost surely, 22105421037 is an apocalyptic number.
It is an amenable number.
2105421037 is a deficient number, since it is larger than the sum of its proper divisors (1).
2105421037 is an equidigital number, since it uses as much as digits as its factorization.
2105421037 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 1680, while the sum is 25.
The square root of 2105421037 is about 45884.8671895212. The cubic root of 2105421037 is about 1281.6801335689.
Adding to 2105421037 its reverse (7301245012), we get a palindrome (9406666049).
The spelling of 2105421037 in words is "two billion, one hundred five million, four hundred twenty-one thousand, thirty-seven".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.065 sec. • engine limits •