Base | Representation |
---|---|
bin | 1111100110010… |
… | …00000000010010 |
3 | 100010012111100210 |
4 | 13303020000102 |
5 | 231443431032 |
6 | 20552224550 |
7 | 3146100300 |
oct | 763100022 |
9 | 303174323 |
10 | 130842642 |
11 | 67948017 |
12 | 3799b156 |
13 | 211521a8 |
14 | 1353d270 |
15 | b7482cc |
hex | 7cc8012 |
130842642 has 96 divisors (see below), whose sum is σ = 329764608. Its totient is φ = 34374144.
The previous prime is 130842631. The next prime is 130842643. The reversal of 130842642 is 246248031.
It is not an unprimeable number, because it can be changed into a prime (130842643) by changing a digit.
It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 234628 + ... + 235184.
It is an arithmetic number, because the mean of its divisors is an integer number (3435048).
Almost surely, 2130842642 is an apocalyptic number.
It is a practical number, because each smaller number is the sum of distinct divisors of 130842642, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (164882304).
130842642 is an abundant number, since it is smaller than the sum of its proper divisors (198921966).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
130842642 is a wasteful number, since it uses less digits than its factorization.
130842642 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 640 (or 633 counting only the distinct ones).
The product of its (nonzero) digits is 9216, while the sum is 30.
The square root of 130842642 is about 11438.6468605338. The cubic root of 130842642 is about 507.6718720283.
The spelling of 130842642 in words is "one hundred thirty million, eight hundred forty-two thousand, six hundred forty-two".
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