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130340123420 = 22513796345673
BaseRepresentation
bin111100101100011100…
…0000111001100011100
3110110102121221022020112
41321120320013030130
54113414032422140
6135513305105152
712262643524553
oct1713070071434
9413377838215
10130340123420
1150305668971
12213167881b8
13c3a24b03b0
146446724d9a
1535ccb4ac65
hex1e58e0731c

130340123420 has 48 divisors (see below), whose sum is σ = 298500504960. Its totient is φ = 47516391936.

The previous prime is 130340123387. The next prime is 130340123429. The reversal of 130340123420 is 24321043031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130340123429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3152297 + ... + 3193376.

It is an arithmetic number, because the mean of its divisors is an integer number (6218760520).

Almost surely, 2130340123420 is an apocalyptic number.

130340123420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

130340123420 is an abundant number, since it is smaller than the sum of its proper divisors (168160381540).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

130340123420 is a wasteful number, since it uses less digits than its factorization.

130340123420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6345774 (or 6345772 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 130340123420 its reverse (24321043031), we get a palindrome (154661166451).

The spelling of 130340123420 in words is "one hundred thirty billion, three hundred forty million, one hundred twenty-three thousand, four hundred twenty".

Divisors: 1 2 4 5 10 13 20 26 52 65 79 130 158 260 316 395 790 1027 1580 2054 4108 5135 10270 20540 6345673 12691346 25382692 31728365 63456730 82493749 126913460 164987498 329974996 412468745 501308167 824937490 1002616334 1649874980 2005232668 2506540835 5013081670 6517006171 10026163340 13034012342 26068024684 32585030855 65170061710 130340123420