Base | Representation |
---|---|
bin | 111111110000101… |
… | …0001000110000101 |
3 | 12112002201011101122 |
4 | 1333201101012011 |
5 | 13340143132310 |
6 | 552143203325 |
7 | 104005555046 |
oct | 17741210605 |
9 | 5462634348 |
10 | 2139427205 |
11 | 9a8718363 |
12 | 4b85a6545 |
13 | 281313a76 |
14 | 1641d08cd |
15 | c7c54555 |
hex | 7f851185 |
2139427205 has 8 divisors (see below), whose sum is σ = 2567700000. Its totient is φ = 1711283536.
The previous prime is 2139427201. The next prime is 2139427207. The reversal of 2139427205 is 5027249312.
It is a happy number.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 2139427205 - 22 = 2139427201 is a prime.
It is a super-2 number, since 2×21394272052 = 9154297530988224050, which contains 22 as substring.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (2139427201) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8966 + ... + 66024.
It is an arithmetic number, because the mean of its divisors is an integer number (320962500).
Almost surely, 22139427205 is an apocalyptic number.
It is an amenable number.
2139427205 is a deficient number, since it is larger than the sum of its proper divisors (428272795).
2139427205 is an equidigital number, since it uses as much as digits as its factorization.
2139427205 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 64563.
The product of its (nonzero) digits is 30240, while the sum is 35.
The square root of 2139427205 is about 46253.9425887135. The cubic root of 2139427205 is about 1288.5437576276.
The spelling of 2139427205 in words is "two billion, one hundred thirty-nine million, four hundred twenty-seven thousand, two hundred five".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.076 sec. • engine limits •