Base | Representation |
---|---|
bin | 100110010111100… |
… | …0110010010011110 |
3 | 10022201111110021220 |
4 | 1030233012102132 |
5 | 10114034234232 |
6 | 331425434210 |
7 | 43621563222 |
oct | 11457062236 |
9 | 3281443256 |
10 | 1287414942 |
11 | 6007919a0 |
12 | 2bb19b966 |
13 | 17694c8b8 |
14 | c2da6782 |
15 | 7805642c |
hex | 4cbc649e |
1287414942 has 32 divisors (see below), whose sum is σ = 2829133440. Its totient is φ = 387316320.
The previous prime is 1287414941. The next prime is 1287414971. The reversal of 1287414942 is 2494147821.
1287414942 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.
It is a junction number, because it is equal to n+sod(n) for n = 1287414894 and 1287414903.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1287414941) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60993 + ... + 79340.
It is an arithmetic number, because the mean of its divisors is an integer number (88410420).
Almost surely, 21287414942 is an apocalyptic number.
1287414942 is an abundant number, since it is smaller than the sum of its proper divisors (1541718498).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1287414942 is a wasteful number, since it uses less digits than its factorization.
1287414942 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 140488.
The product of its digits is 129024, while the sum is 42.
The square root of 1287414942 is about 35880.5649621073. The cubic root of 1287414942 is about 1087.8595996155.
The spelling of 1287414942 in words is "one billion, two hundred eighty-seven million, four hundred fourteen thousand, nine hundred forty-two".
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