Base | Representation |
---|---|
bin | 10000111110010… |
… | …11001010110000 |
3 | 100220221011021100 |
4 | 20133023022300 |
5 | 242422434221 |
6 | 22043524400 |
7 | 3346203003 |
oct | 1037131260 |
9 | 326834240 |
10 | 142389936 |
11 | 73414737 |
12 | 3b829700 |
13 | 23666100 |
14 | 14ca753a |
15 | c779926 |
hex | 87cb2b0 |
142389936 has 90 divisors (see below), whose sum is σ = 431579148. Its totient is φ = 43804800.
The previous prime is 142389917. The next prime is 142389967. The reversal of 142389936 is 639983241.
It is a happy number.
It is a nude number because it is divisible by every one of its digits.
It is a junction number, because it is equal to n+sod(n) for n = 142389891 and 142389900.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 21411 + ... + 27261.
Almost surely, 2142389936 is an apocalyptic number.
142389936 is a gapful number since it is divisible by the number (16) 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 142389936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (215789574).
142389936 is an abundant number, since it is smaller than the sum of its proper divisors (289189212).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
142389936 is a wasteful number, since it uses less digits than its factorization.
142389936 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 5891 (or 5869 counting only the distinct ones).
The product of its digits is 279936, while the sum is 45.
The square root of 142389936 is about 11932.7254221322. The cubic root of 142389936 is about 522.1874519445.
The spelling of 142389936 in words is "one hundred forty-two million, three hundred eighty-nine thousand, nine hundred thirty-six".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.067 sec. • engine limits •