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130127905 = 5231131547
BaseRepresentation
bin1111100000110…
…01100000100001
3100001212011221001
413300121200201
5231303043110
620525032001
73140032435
oct760314041
9301764831
10130127905
11674aa026
12376b5601
1320c61a7b
14133d49c5
15b65663a
hex7c19821

130127905 has 8 divisors (see below), whose sum is σ = 162942912. Its totient is φ = 99576048.

The previous prime is 130127897. The next prime is 130127909. The reversal of 130127905 is 509721031.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 130127905 - 23 = 130127897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130127909) 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 7 ways as a sum of consecutive naturals, for example, 565659 + ... + 565888.

It is an arithmetic number, because the mean of its divisors is an integer number (20367864).

Almost surely, 2130127905 is an apocalyptic number.

It is an amenable number.

130127905 is a deficient number, since it is larger than the sum of its proper divisors (32815007).

130127905 is a wasteful number, since it uses less digits than its factorization.

130127905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1131575.

The product of its (nonzero) digits is 1890, while the sum is 28.

The square root of 130127905 is about 11407.3618773141. The cubic root of 130127905 is about 506.7457861112.

Adding to 130127905 its reverse (509721031), we get a palindrome (639848936).

The spelling of 130127905 in words is "one hundred thirty million, one hundred twenty-seven thousand, nine hundred five".

Divisors: 1 5 23 115 1131547 5657735 26025581 130127905