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12130203040 = 25575813769
BaseRepresentation
bin10110100110000010…
…00011010110100000
31011022101010011100021
423103001003112200
5144320312444130
65323400203224
7606412011304
oct132301032640
934271104307
1012130203040
11516520209a
122426469514
1311b4121847
14831031d04
154aedde37a
hex2d30435a0

12130203040 has 24 divisors (see below), whose sum is σ = 28657605060. Its totient is φ = 4852081152.

The previous prime is 12130203037. The next prime is 12130203061. The reversal of 12130203040 is 4030203121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 11727157264 + 403045776 = 108292^2 + 20076^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37906725 + ... + 37907044.

Almost surely, 212130203040 is an apocalyptic number.

12130203040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12130203040 is an abundant number, since it is smaller than the sum of its proper divisors (16527402020).

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

12130203040 is an equidigital number, since it uses as much as digits as its factorization.

12130203040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75813784 (or 75813776 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 12130203040 its reverse (4030203121), we get a palindrome (16160406161).

The spelling of 12130203040 in words is "twelve billion, one hundred thirty million, two hundred three thousand, forty".

Divisors: 1 2 4 5 8 10 16 20 32 40 80 160 75813769 151627538 303255076 379068845 606510152 758137690 1213020304 1516275380 2426040608 3032550760 6065101520 12130203040