| Base | Representation |
|---|---|
| bin | 100101000000101… |
| … | …1111100100010100 |
| 3 | 10012112212022222100 |
| 4 | 1022001133210110 |
| 5 | 10020411433203 |
| 6 | 323122202100 |
| 7 | 42530010351 |
| oct | 11201374424 |
| 9 | 3175768870 |
| 10 | 1241905428 |
| 11 | 588028a25 |
| 12 | 2a7ab3330 |
| 13 | 16a3a73aa |
| 14 | bad1b628 |
| 15 | 74066ea3 |
| hex | 4a05f914 |
1241905428 has 36 divisors (see below), whose sum is σ = 3177091008. Its totient is φ = 408979920.
The previous prime is 1241905409. The next prime is 1241905439. The reversal of 1241905428 is 8245091421.
1241905428 is a `hidden beast` number, since 1 + 24 + 1 + 90 + 542 + 8 = 666.
It is a tau number, because it is divible by the number of its divisors (36).
It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.
It is a Harshad number since it is a multiple of its sum of digits (36).
It is a junction number, because it is equal to n+sod(n) for n = 1241905392 and 1241905401.
It is a congruent number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 204828 + ... + 210803.
It is an arithmetic number, because the mean of its divisors is an integer number (88252528).
Almost surely, 21241905428 is an apocalyptic number.
1241905428 is a gapful number since it is divisible by the number (18) formed by its first and last digit.
It is an amenable number.
1241905428 is an abundant number, since it is smaller than the sum of its proper divisors (1935185580).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1241905428 is a wasteful number, since it uses less digits than its factorization.
1241905428 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 415724 (or 415719 counting only the distinct ones).
The product of its (nonzero) digits is 23040, while the sum is 36.
The square root of 1241905428 is about 35240.6785973256. The cubic root of 1241905428 is about 1074.8870775202.
Adding to 1241905428 its reverse (8245091421), we get a palindrome (9486996849).
The spelling of 1241905428 in words is "one billion, two hundred forty-one million, nine hundred five thousand, four hundred twenty-eight".
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