Base | Representation |
---|---|
bin | 11111000110100000110 |
3 | 1220210000000 |
4 | 3320310012 |
5 | 230103032 |
6 | 33502130 |
7 | 11443155 |
oct | 3706406 |
9 | 1823000 |
10 | 1019142 |
11 | 636773 |
12 | 411946 |
13 | 298b57 |
14 | 1c759c |
15 | 151e7c |
hex | f8d06 |
1019142 has 32 divisors (see below), whose sum is σ = 2302560. Its totient is φ = 338256.
The previous prime is 1019129. The next prime is 1019173. The reversal of 1019142 is 2419101.
1019142 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a Harshad number since it is a multiple of its sum of digits (18).
It is an Ulam number.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4258 + ... + 4490.
It is an arithmetic number, because the mean of its divisors is an integer number (71955).
21019142 is an apocalyptic number.
It is a practical number, because each smaller number is the sum of distinct divisors of 1019142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1151280).
1019142 is an abundant number, since it is smaller than the sum of its proper divisors (1283418).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1019142 is an frugal number, since it uses more digits than its factorization.
1019142 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 256 (or 238 counting only the distinct ones).
The product of its (nonzero) digits is 72, while the sum is 18.
The square root of 1019142 is about 1009.5256311754. The cubic root of 1019142 is about 100.6340381270.
The spelling of 1019142 in words is "one million, nineteen thousand, one hundred forty-two".
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