Base | Representation |
---|---|
bin | 100101001101001000101 |
3 | 2021221100101 |
4 | 10221221011 |
5 | 303003031 |
6 | 42044101 |
7 | 13235230 |
oct | 4515105 |
9 | 2257311 |
10 | 1219141 |
11 | 762a60 |
12 | 4a9631 |
13 | 338bb1 |
14 | 23a417 |
15 | 191361 |
hex | 129a45 |
1219141 has 16 divisors (see below), whose sum is σ = 1548288. Its totient is φ = 932400.
The previous prime is 1219129. The next prime is 1219147. The reversal of 1219141 is 1419121.
1219141 is a nontrivial binomial coefficient, being equal to C(1562, 2).
It is not a de Polignac number, because 1219141 - 25 = 1219109 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1219147) 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, 5356 + ... + 5578.
It is an arithmetic number, because the mean of its divisors is an integer number (96768).
21219141 is an apocalyptic number.
1219141 is a gapful number since it is divisible by the number (11) formed by its first and last digit.
1219141 is the 1561-st triangular number and also the 781-st hexagonal number.
1219141 is the 521-st centered nonagonal number.
It is an amenable number.
1219141 is a deficient number, since it is larger than the sum of its proper divisors (329147).
1219141 is a wasteful number, since it uses less digits than its factorization.
1219141 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 312.
The product of its digits is 72, while the sum is 19.
The square root of 1219141 is about 1104.1471822180. The cubic root of 1219141 is about 106.8278887923.
The spelling of 1219141 in words is "one million, two hundred nineteen thousand, one hundred forty-one".
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