Base | Representation |
---|---|
bin | 1010010001111… |
… | …1111011110100 |
3 | 10000010211211200 |
4 | 2210133323310 |
5 | 42014404140 |
6 | 4140132500 |
7 | 1032351225 |
oct | 244377364 |
9 | 100124750 |
10 | 43122420 |
11 | 22383570 |
12 | 12537130 |
13 | 8c1ab33 |
14 | 5a2724c |
15 | 3bbc030 |
hex | 291fef4 |
43122420 has 144 divisors (see below), whose sum is σ = 147813120. Its totient is φ = 10080000.
The previous prime is 43122413. The next prime is 43122433. The reversal of 43122420 is 2422134.
It is a Harshad number since it is a multiple of its sum of digits (18).
It is a junction number, because it is equal to n+sod(n) for n = 43122393 and 43122402.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 57045 + ... + 57795.
It is an arithmetic number, because the mean of its divisors is an integer number (1026480).
Almost surely, 243122420 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 43122420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73906560).
43122420 is an abundant number, since it is smaller than the sum of its proper divisors (104690700).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
43122420 is a wasteful number, since it uses less digits than its factorization.
43122420 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 806 (or 801 counting only the distinct ones).
The product of its (nonzero) digits is 384, while the sum is 18.
The square root of 43122420 is about 6566.7663275009. The cubic root of 43122420 is about 350.6719607856.
Adding to 43122420 its reverse (2422134), we get a palindrome (45544554).
The spelling of 43122420 in words is "forty-three million, one hundred twenty-two thousand, four hundred twenty".
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