| Base | Representation |
|---|---|
| bin | 100101000001011… |
| … | …0010000000000000 |
| 3 | 10012120111111010200 |
| 4 | 1022002302000000 |
| 5 | 10021003234242 |
| 6 | 323133325200 |
| 7 | 42532614630 |
| oct | 11202620000 |
| 9 | 3176444120 |
| 10 | 1242243072 |
| 11 | 588239674 |
| 12 | 2a8036800 |
| 13 | 16a494c95 |
| 14 | bada86c0 |
| 15 | 740d204c |
| hex | 4a0b2000 |
1242243072 has 336 divisors, whose sum is σ = 4293656640. Its totient is φ = 338558976.
The previous prime is 1242243071. The next prime is 1242243073. The reversal of 1242243072 is 2703422421.
It is an interprime number because it is at equal distance from previous prime (1242243071) and next prime (1242243073).
It is a tau number, because it is divible by the number of its divisors (336).
It is not an unprimeable number, because it can be changed into a prime (1242243071) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (7) of ones.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14966743 + ... + 14966825.
It is an arithmetic number, because the mean of its divisors is an integer number (12778740).
Almost surely, 21242243072 is an apocalyptic number.
1242243072 is a gapful number since it is divisible by the number (12) 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 1242243072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2146828320).
1242243072 is an abundant number, since it is smaller than the sum of its proper divisors (3051413568).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1242243072 is an equidigital number, since it uses as much as digits as its factorization.
1242243072 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 151 (or 124 counting only the distinct ones).
The product of its (nonzero) digits is 5376, while the sum is 27.
The square root of 1242243072 is about 35245.4688151541. The cubic root of 1242243072 is about 1074.9844806124.
Adding to 1242243072 its reverse (2703422421), we get a palindrome (3945665493).
The spelling of 1242243072 in words is "one billion, two hundred forty-two million, two hundred forty-three thousand, seventy-two".
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