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12420441230 = 2517107743919
BaseRepresentation
bin10111001000101000…
…01110010010001110
31012001121020210021212
423210110032102032
5200414113104410
65412245054422
7616535002631
oct134424162216
935047223255
1012420441230
1152a401936a
1224a76b7412
13122c2b2312
1485b7c3c18
154ca620b05
hex2e450e48e

12420441230 has 64 divisors (see below), whose sum is σ = 23951324160. Its totient is φ = 4620962304.

The previous prime is 12420441223. The next prime is 12420441239. The reversal of 12420441230 is 3214402421.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12420441196 and 12420441205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12420441239) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13514711 + ... + 13515629.

It is an arithmetic number, because the mean of its divisors is an integer number (374239440).

Almost surely, 212420441230 is an apocalyptic number.

12420441230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12420441230 is a deficient number, since it is larger than the sum of its proper divisors (11530882930).

12420441230 is a wasteful number, since it uses less digits than its factorization.

12420441230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1793.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 12420441230 its reverse (3214402421), we get a palindrome (15634843651).

The spelling of 12420441230 in words is "twelve billion, four hundred twenty million, four hundred forty-one thousand, two hundred thirty".

Divisors: 1 2 5 10 17 34 85 107 170 214 535 743 919 1070 1486 1819 1838 3638 3715 4595 7430 9095 9190 12631 15623 18190 25262 31246 63155 78115 79501 98333 126310 156230 159002 196666 397505 491665 682817 795010 983330 1351517 1365634 1671661 2703034 3343322 3414085 6757585 6828170 8358305 11607889 13515170 16716610 23215778 58039445 73061419 116078890 146122838 365307095 730614190 1242044123 2484088246 6210220615 12420441230