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12512424140 = 225748783561
BaseRepresentation
bin10111010011100110…
…00111000011001100
31012022000100000010022
423221303013003030
5201111140033030
65425332401312
7622032564446
oct135163070314
935260300108
1012512424140
115340a344a7
122512476238
131245379988
14869ac9496
154d373ede5
hex2e9cc70cc

12512424140 has 24 divisors (see below), whose sum is σ = 26279914752. Its totient is φ = 5004241280.

The previous prime is 12512424139. The next prime is 12512424151. The reversal of 12512424140 is 4142421521.

12512424140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107960 + ... + 191520.

It is an arithmetic number, because the mean of its divisors is an integer number (1094996448).

Almost surely, 212512424140 is an apocalyptic number.

12512424140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12512424140 is an abundant number, since it is smaller than the sum of its proper divisors (13767490612).

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

12512424140 is a wasteful number, since it uses less digits than its factorization.

12512424140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91057 (or 91055 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 26.

Adding to 12512424140 its reverse (4142421521), we get a palindrome (16654845661).

The spelling of 12512424140 in words is "twelve billion, five hundred twelve million, four hundred twenty-four thousand, one hundred forty".

Divisors: 1 2 4 5 10 20 7487 14974 29948 37435 74870 83561 149740 167122 334244 417805 835610 1671220 625621207 1251242414 2502484828 3128106035 6256212070 12512424140