| Base | Representation |
|---|---|
| bin | 1111011110101010… |
| … | …0001111100100000 |
| 3 | 101201120121001001200 |
| 4 | 3313222201330200 |
| 5 | 32002202341230 |
| 6 | 1524150401200 |
| 7 | 204652643451 |
| oct | 36752417440 |
| 9 | 11646531050 |
| 10 | 4155121440 |
| 11 | 1842504268 |
| 12 | 97b660200 |
| 13 | 512ac4752 |
| 14 | 2b5bb3128 |
| 15 | 194bb7160 |
| hex | f7aa1f20 |
4155121440 has 144 divisors (see below), whose sum is σ = 14282049600. Its totient is φ = 1100007936.
The previous prime is 4155121331. The next prime is 4155121459. The reversal of 4155121440 is 441215514.
4155121440 is a `hidden beast` number, since 4 + 1 + 5 + 512 + 144 + 0 = 666.
It is a tau number, because it is divible by the number of its divisors (144).
It is a super-2 number, since 2×41551214402 = 34530068362295347200, which contains 22 as substring.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 189781 + ... + 210539.
It is an arithmetic number, because the mean of its divisors is an integer number (99180900).
Almost surely, 24155121440 is an apocalyptic number.
4155121440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 4155121440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7141024800).
4155121440 is an abundant number, since it is smaller than the sum of its proper divisors (10126928160).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
4155121440 is a wasteful number, since it uses less digits than its factorization.
4155121440 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 20919 (or 20908 counting only the distinct ones).
The product of its (nonzero) digits is 3200, while the sum is 27.
The square root of 4155121440 is about 64460.2314609558. The cubic root of 4155121440 is about 1607.6613603363.
Adding to 4155121440 its reverse (441215514), we get a palindrome (4596336954).
The spelling of 4155121440 in words is "four billion, one hundred fifty-five million, one hundred twenty-one thousand, four hundred forty".
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