| Base | Representation |
|---|---|
| bin | 101110001100101… |
| … | …0000000001110000 |
| 3 | 11000000211102011102 |
| 4 | 1130121100001300 |
| 5 | 11133312414440 |
| 6 | 413452303532 |
| 7 | 53261554250 |
| oct | 13431200160 |
| 9 | 4000742142 |
| 10 | 1550123120 |
| 11 | 726005497 |
| 12 | 373171ba8 |
| 13 | 1b91c1720 |
| 14 | 109c2d960 |
| 15 | 9114ab15 |
| hex | 5c650070 |
1550123120 has 160 divisors (see below), whose sum is σ = 4499712000. Its totient is φ = 483517440.
The previous prime is 1550123093. The next prime is 1550123123. The reversal of 1550123120 is 213210551.
It is a happy number.
It is a Harshad number since it is a multiple of its sum of digits (20).
It is a junction number, because it is equal to n+sod(n) for n = 1550123092 and 1550123101.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1550123123) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 515381 + ... + 518379.
It is an arithmetic number, because the mean of its divisors is an integer number (28123200).
Almost surely, 21550123120 is an apocalyptic number.
1550123120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 1550123120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2249856000).
1550123120 is an abundant number, since it is smaller than the sum of its proper divisors (2949588880).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1550123120 is a wasteful number, since it uses less digits than its factorization.
1550123120 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 3103 (or 3097 counting only the distinct ones).
The product of its (nonzero) digits is 300, while the sum is 20.
The square root of 1550123120 is about 39371.6029645733. The cubic root of 1550123120 is about 1157.3251686242.
Adding to 1550123120 its reverse (213210551), we get a palindrome (1763333671).
The spelling of 1550123120 in words is "one billion, five hundred fifty million, one hundred twenty-three thousand, one hundred twenty".
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