| Base | Representation |
|---|---|
| bin | 100100000111111… |
| … | …1100110111110000 |
| 3 | 10010110212010220121 |
| 4 | 1020033330313300 |
| 5 | 4440302003130 |
| 6 | 320140220024 |
| 7 | 42016012615 |
| oct | 11017746760 |
| 9 | 3113763817 |
| 10 | 1212141040 |
| 11 | 572249560 |
| 12 | 299b3a614 |
| 13 | 164185726 |
| 14 | b6db050c |
| 15 | 71637d7a |
| hex | 483fcdf0 |
1212141040 has 80 divisors (see below), whose sum is σ = 3102881760. Its totient is φ = 436700160.
The previous prime is 1212141037. The next prime is 1212141041. The reversal of 1212141040 is 401412121.
It is a happy number.
It is a tau number, because it is divible by the number of its divisors (80).
It is a Harshad number since it is a multiple of its sum of digits (16).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1212141041) 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 15 ways as a sum of consecutive naturals, for example, 89602 + ... + 102238.
It is an arithmetic number, because the mean of its divisors is an integer number (38786022).
Almost surely, 21212141040 is an apocalyptic number.
1212141040 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 1212141040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1551440880).
1212141040 is an abundant number, since it is smaller than the sum of its proper divisors (1890740720).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1212141040 is a wasteful number, since it uses less digits than its factorization.
1212141040 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 12770 (or 12764 counting only the distinct ones).
The product of its (nonzero) digits is 64, while the sum is 16.
The square root of 1212141040 is about 34815.8159462047. The cubic root of 1212141040 is about 1066.2303779969.
Adding to 1212141040 its reverse (401412121), we get a palindrome (1613553161).
The spelling of 1212141040 in words is "one billion, two hundred twelve million, one hundred forty-one thousand, forty".
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