| Base | Representation |
|---|---|
| bin | 100101000001110… |
| … | …0000001011011000 |
| 3 | 10012120212002121000 |
| 4 | 1022003200023120 |
| 5 | 10021030312331 |
| 6 | 323141345000 |
| 7 | 42534333234 |
| oct | 11203401330 |
| 9 | 3176762530 |
| 10 | 1242432216 |
| 11 | 588358793 |
| 12 | 2a8108160 |
| 13 | 16a5300bc |
| 14 | bb0175c4 |
| 15 | 7411d0e6 |
| hex | 4a0e02d8 |
1242432216 has 256 divisors, whose sum is σ = 3906662400. Its totient is φ = 363737088.
The previous prime is 1242432203. The next prime is 1242432221. The reversal of 1242432216 is 6122342421.
1242432216 is a `hidden beast` number, since 12 + 4 + 2 + 432 + 216 = 666.
It is a super-2 number, since 2×12424322162 = 3087275622709341312, which contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (27).
It is a nude number because it is divisible by every one of its digits.
It is a self number, because there is not a number n which added to its sum of digits gives 1242432216.
It is a congruent number.
It is an unprimeable number.
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 63 ways as a sum of consecutive naturals, for example, 3969276 + ... + 3969588.
It is an arithmetic number, because the mean of its divisors is an integer number (15260400).
Almost surely, 21242432216 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 1242432216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1953331200).
1242432216 is an abundant number, since it is smaller than the sum of its proper divisors (2664230184).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1242432216 is a wasteful number, since it uses less digits than its factorization.
1242432216 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 415 (or 405 counting only the distinct ones).
The product of its digits is 4608, while the sum is 27.
The square root of 1242432216 is about 35248.1519515563. The cubic root of 1242432216 is about 1075.0390369094.
Adding to 1242432216 its reverse (6122342421), we get a palindrome (7364774637).
The spelling of 1242432216 in words is "one billion, two hundred forty-two million, four hundred thirty-two thousand, two hundred sixteen".
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