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130105429 = 157828697
BaseRepresentation
bin1111100000101…
…00000001010101
3100001211001002121
413300110001111
5231301333204
620524335541
73136610056
oct760240125
9301731077
10130105429
1167494153
12376a45b1
1320c5477c
14133ca72d
15b64eb54
hex7c14055

130105429 has 4 divisors (see below), whose sum is σ = 130934284. Its totient is φ = 129276576.

The previous prime is 130105427. The next prime is 130105433. The reversal of 130105429 is 924501031.

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 31102929 + 99002500 = 5577^2 + 9950^2 .

It is a cyclic number.

It is not a de Polignac number, because 130105429 - 21 = 130105427 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 (130105427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 414192 + ... + 414505.

It is an arithmetic number, because the mean of its divisors is an integer number (32733571).

Almost surely, 2130105429 is an apocalyptic number.

It is an amenable number.

130105429 is a deficient number, since it is larger than the sum of its proper divisors (828855).

130105429 is an equidigital number, since it uses as much as digits as its factorization.

130105429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 828854.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 130105429 is about 11406.3766814883. The cubic root of 130105429 is about 506.7166089871.

The spelling of 130105429 in words is "one hundred thirty million, one hundred five thousand, four hundred twenty-nine".

Divisors: 1 157 828697 130105429