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12420420230 = 251242042023
BaseRepresentation
bin10111001000101000…
…01001001010000110
31012001121012201111002
423210110021022012
5200414111421410
65412244413302
7616534554461
oct134424111206
935047181432
1012420420230
1152a4004609
1224a76a7232
13122c2a58aa
1485b7ba2d8
154ca6197a5
hex2e4509286

12420420230 has 8 divisors (see below), whose sum is σ = 22356756432. Its totient is φ = 4968168088.

The previous prime is 12420420191. The next prime is 12420420281. The reversal of 12420420230 is 3202402421.

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

It is a congruent number.

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, 621021002 + ... + 621021021.

It is an arithmetic number, because the mean of its divisors is an integer number (2794594554).

Almost surely, 212420420230 is an apocalyptic number.

12420420230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12420420230 is a deficient number, since it is larger than the sum of its proper divisors (9936336202).

12420420230 is a wasteful number, since it uses less digits than its factorization.

12420420230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1242042030.

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 12420420230 its reverse (3202402421), we get a palindrome (15622822651).

The spelling of 12420420230 in words is "twelve billion, four hundred twenty million, four hundred twenty thousand, two hundred thirty".

Divisors: 1 2 5 10 1242042023 2484084046 6210210115 12420420230