Base | Representation |
---|---|
bin | 10001010011010… |
… | …11010101011010 |
3 | 101010010000221111 |
4 | 20221223111122 |
5 | 244124040010 |
6 | 22222530534 |
7 | 3411460546 |
oct | 1051532532 |
9 | 333100844 |
10 | 145143130 |
11 | 74a25200 |
12 | 40736a4a |
13 | 240bb312 |
14 | 153c2a26 |
15 | cb2058a |
hex | 8a6b55a |
145143130 has 24 divisors (see below), whose sum is σ = 287169876. Its totient is φ = 52778880.
The previous prime is 145143121. The next prime is 145143139. The reversal of 145143130 is 31341541.
145143130 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is an interprime number because it is at equal distance from previous prime (145143121) and next prime (145143139).
It can be written as a sum of positive squares in 2 ways, for example, as 140351409 + 4791721 = 11847^2 + 2189^2 .
It is a Harshad number since it is a multiple of its sum of digits (22).
It is not an unprimeable number, because it can be changed into a prime (145143139) by changing a digit.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58767 + ... + 61186.
Almost surely, 2145143130 is an apocalyptic number.
145143130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
145143130 is a deficient number, since it is larger than the sum of its proper divisors (142026746).
145143130 is a wasteful number, since it uses less digits than its factorization.
145143130 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 119982 (or 119971 counting only the distinct ones).
The product of its (nonzero) digits is 720, while the sum is 22.
The square root of 145143130 is about 12047.5362626555. The cubic root of 145143130 is about 525.5315915600.
Adding to 145143130 its reverse (31341541), we get a palindrome (176484671).
The spelling of 145143130 in words is "one hundred forty-five million, one hundred forty-three thousand, one hundred thirty".
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