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12420230 = 252354001
BaseRepresentation
bin101111011000…
…010010000110
3212101000100112
4233120102012
511134421410
61122113022
7210366404
oct57302206
925330315
1012420230
117013559
1241ab772
13275b364
141914474
151155105
hexbd8486

12420230 has 16 divisors (see below), whose sum is σ = 23328864. Its totient is φ = 4752000.

The previous prime is 12420229. The next prime is 12420257. The reversal of 12420230 is 3202421.

It is a super-2 number, since 2×124202302 = 308524226505800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26771 + ... + 27230.

It is an arithmetic number, because the mean of its divisors is an integer number (1458054).

Almost surely, 212420230 is an apocalyptic number.

12420230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12420230 is a deficient number, since it is larger than the sum of its proper divisors (10908634).

12420230 is a wasteful number, since it uses less digits than its factorization.

12420230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54031.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 12420230 is about 3524.2346686905. The cubic root of 12420230 is about 231.5847083984.

Adding to 12420230 its reverse (3202421), we get a palindrome (15622651).

The spelling of 12420230 in words is "twelve million, four hundred twenty thousand, two hundred thirty".

Divisors: 1 2 5 10 23 46 115 230 54001 108002 270005 540010 1242023 2484046 6210115 12420230