Base | Representation |
---|---|
bin | 1111100010111… |
… | …11001101101101 |
3 | 100002101200120201 |
4 | 13301133031231 |
5 | 231341212141 |
6 | 20535113501 |
7 | 3142332025 |
oct | 761371555 |
9 | 302350521 |
10 | 130413421 |
11 | 67684596 |
12 | 37812891 |
13 | 21031a08 |
14 | 1346aa85 |
15 | b6b1031 |
hex | 7c5f36d |
130413421 has 4 divisors (see below), whose sum is σ = 130858812. Its totient is φ = 129968032.
The previous prime is 130413407. The next prime is 130413431. The reversal of 130413421 is 124314031.
It is a semiprime because it is the product of two primes.
It can be written as a sum of positive squares in 2 ways, for example, as 120890025 + 9523396 = 10995^2 + 3086^2 .
It is a cyclic number.
It is not a de Polignac number, because 130413421 - 25 = 130413389 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (130413431) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 222256 + ... + 222841.
It is an arithmetic number, because the mean of its divisors is an integer number (32714703).
Almost surely, 2130413421 is an apocalyptic number.
It is an amenable number.
130413421 is a deficient number, since it is larger than the sum of its proper divisors (445391).
130413421 is an equidigital number, since it uses as much as digits as its factorization.
130413421 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 445390.
The product of its (nonzero) digits is 288, while the sum is 19.
The square root of 130413421 is about 11419.8695701834. The cubic root of 130413421 is about 507.1161354243.
Adding to 130413421 its reverse (124314031), we get a palindrome (254727452).
The spelling of 130413421 in words is "one hundred thirty million, four hundred thirteen thousand, four hundred twenty-one".
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