Base | Representation |
---|---|
bin | 1111100000110… |
… | …00011010111111 |
3 | 100001211221211020 |
4 | 13300120122333 |
5 | 231302422310 |
6 | 20524555223 |
7 | 3140013450 |
oct | 760303277 |
9 | 301757736 |
10 | 130123455 |
11 | 674a6750 |
12 | 376b2b13 |
13 | 20c5ca37 |
14 | 133d3127 |
15 | b655170 |
hex | 7c186bf |
130123455 has 64 divisors (see below), whose sum is σ = 262130688. Its totient is φ = 53544960.
The previous prime is 130123453. The next prime is 130123471. The reversal of 130123455 is 554321031.
It is not a de Polignac number, because 130123455 - 21 = 130123453 is a prime.
It is a super-2 number, since 2×1301234552 = 33864227082274050, which contains 22 as substring.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (130123453) by changing a digit.
It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 130017 + ... + 131013.
It is an arithmetic number, because the mean of its divisors is an integer number (4095792).
Almost surely, 2130123455 is an apocalyptic number.
130123455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.
130123455 is an abundant number, since it is smaller than the sum of its proper divisors (132007233).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
130123455 is a wasteful number, since it uses less digits than its factorization.
130123455 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1136.
The product of its (nonzero) digits is 1800, while the sum is 24.
The square root of 130123455 is about 11407.1668261668. The cubic root of 130123455 is about 506.7400096293.
Adding to 130123455 its reverse (554321031), we get a palindrome (684444486).
The spelling of 130123455 in words is "one hundred thirty million, one hundred twenty-three thousand, four hundred fifty-five".
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