Base | Representation |
---|---|
bin | 101010111110110… |
… | …1001110001001111 |
3 | 10201111210122002022 |
4 | 1111331221301033 |
5 | 10423202201411 |
6 | 355035520355 |
7 | 50511466166 |
oct | 12575516117 |
9 | 3644718068 |
10 | 1442225231 |
11 | 68010a187 |
12 | 342bb90bb |
13 | 19ca44115 |
14 | d97843dd |
15 | 86935edb |
hex | 55f69c4f |
1442225231 has 2 divisors, whose sum is σ = 1442225232. Its totient is φ = 1442225230.
The previous prime is 1442225177. The next prime is 1442225233. The reversal of 1442225231 is 1325222441.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 1442225231 - 226 = 1375116367 is a prime.
It is a super-2 number, since 2×14422252312 = 4160027233866006722, which contains 22 as substring.
Together with 1442225233, it forms a pair of twin primes.
It is a Chen prime.
It is a self number, because there is not a number n which added to its sum of digits gives 1442225231.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (1442225233) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 721112615 + 721112616.
It is an arithmetic number, because the mean of its divisors is an integer number (721112616).
Almost surely, 21442225231 is an apocalyptic number.
1442225231 is a deficient number, since it is larger than the sum of its proper divisors (1).
1442225231 is an equidigital number, since it uses as much as digits as its factorization.
1442225231 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 3840, while the sum is 26.
The square root of 1442225231 is about 37976.6405965562. The cubic root of 1442225231 is about 1129.8246082234.
Adding to 1442225231 its reverse (1325222441), we get a palindrome (2767447672).
The spelling of 1442225231 in words is "one billion, four hundred forty-two million, two hundred twenty-five thousand, two hundred thirty-one".
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