Base | Representation |
---|---|
bin | 1110100011001… |
… | …10101011111101 |
3 | 22111200001120011 |
4 | 13101212223331 |
5 | 222221233141 |
6 | 20040023221 |
7 | 3011311465 |
oct | 721465375 |
9 | 274601504 |
10 | 122055421 |
11 | 62996054 |
12 | 34a61b11 |
13 | 1c396657 |
14 | 122d2ba5 |
15 | aaae881 |
hex | 7466afd |
122055421 has 4 divisors (see below), whose sum is σ = 122405500. Its totient is φ = 121705344.
The previous prime is 122055413. The next prime is 122055433. The reversal of 122055421 is 124550221.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 124550221 = 23 ⋅5415227.
It can be written as a sum of positive squares in 2 ways, for example, as 70056900 + 51998521 = 8370^2 + 7211^2 .
It is a cyclic number.
It is not a de Polignac number, because 122055421 - 23 = 122055413 is a prime.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 122055392 and 122055401.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (122055821) by changing a digit.
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 3 ways as a sum of consecutive naturals, for example, 174516 + ... + 175213.
It is an arithmetic number, because the mean of its divisors is an integer number (30601375).
Almost surely, 2122055421 is an apocalyptic number.
It is an amenable number.
122055421 is a deficient number, since it is larger than the sum of its proper divisors (350079).
122055421 is an equidigital number, since it uses as much as digits as its factorization.
122055421 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 350078.
The product of its (nonzero) digits is 800, while the sum is 22.
The square root of 122055421 is about 11047.8695231253. The cubic root of 122055421 is about 496.0426561585.
The spelling of 122055421 in words is "one hundred twenty-two million, fifty-five thousand, four hundred twenty-one".
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