| Base | Representation |
|---|---|
| bin | 10010000011000001110… |
| … | …111110001011010010000 |
| 3 | 11101120011220010111021220 |
| 4 | 102003001313301122100 |
| 5 | 130304414010013430 |
| 6 | 2345424054445040 |
| 7 | 155413251205020 |
| oct | 22030167613220 |
| 9 | 4346156114256 |
| 10 | 1240203204240 |
| 11 | 438a70416520 |
| 12 | 180439663780 |
| 13 | 8cc487a6b60 |
| 14 | 44051aada80 |
| 15 | 223d9461110 |
| hex | 120c1df1690 |
1240203204240 has 1920 divisors, whose sum is σ = 5499464011776. Its totient is φ = 223086182400.
The previous prime is 1240203204239. The next prime is 1240203204241. The reversal of 1240203204240 is 424023020421.
It is an interprime number because it is at equal distance from previous prime (1240203204239) and next prime (1240203204241).
It is a Harshad number since it is a multiple of its sum of digits (24).
It is a self number, because there is not a number n which added to its sum of digits gives 1240203204240.
It is not an unprimeable number, because it can be changed into a prime (1240203204241) 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 383 ways as a sum of consecutive naturals, for example, 14942207239 + ... + 14942207321.
Almost surely, 21240203204240 is an apocalyptic number.
1240203204240 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 1240203204240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2749732005888).
1240203204240 is an abundant number, since it is smaller than the sum of its proper divisors (4259260807536).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1240203204240 is a wasteful number, since it uses less digits than its factorization.
1240203204240 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 249 (or 202 counting only the distinct ones).
The product of its (nonzero) digits is 3072, while the sum is 24.
Adding to 1240203204240 its reverse (424023020421), we get a palindrome (1664226224661).
The spelling of 1240203204240 in words is "one trillion, two hundred forty billion, two hundred three million, two hundred four thousand, two hundred forty".
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