Base | Representation |
---|---|
bin | 1110011100000… |
… | …00100001000101 |
3 | 22102220011022112 |
4 | 13032000201011 |
5 | 222001101040 |
6 | 20003510405 |
7 | 3000304043 |
oct | 716004105 |
9 | 272804275 |
10 | 121112645 |
11 | 624017a5 |
12 | 34688405 |
13 | 1c1264b4 |
14 | 12129393 |
15 | a975365 |
hex | 7380845 |
121112645 has 8 divisors (see below), whose sum is σ = 146074104. Its totient is φ = 96397504.
The previous prime is 121112627. The next prime is 121112657. The reversal of 121112645 is 546211121.
It can be written as a sum of positive squares in 4 ways, for example, as 78836641 + 42276004 = 8879^2 + 6502^2 .
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-121112645 is a prime.
It is a Duffinian number.
It is a self number, because there is not a number n which added to its sum of digits gives 121112645.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60494 + ... + 62463.
It is an arithmetic number, because the mean of its divisors is an integer number (18259263).
Almost surely, 2121112645 is an apocalyptic number.
It is an amenable number.
121112645 is a deficient number, since it is larger than the sum of its proper divisors (24961459).
121112645 is a wasteful number, since it uses less digits than its factorization.
121112645 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 123159.
The product of its digits is 480, while the sum is 23.
The square root of 121112645 is about 11005.1190361577. The cubic root of 121112645 is about 494.7621821254.
Adding to 121112645 its reverse (546211121), we get a palindrome (667323766).
The spelling of 121112645 in words is "one hundred twenty-one million, one hundred twelve thousand, six hundred forty-five".
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