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12143210 = 254092969
BaseRepresentation
bin101110010100…
…101001101010
3211211221100112
4232110221222
511102040320
61112134322
7205133642
oct56245152
924757315
1012143210
116944412
1240973a2
132692241
141881522
1510ecec5
hexb94a6a

12143210 has 16 divisors (see below), whose sum is σ = 21918600. Its totient is φ = 4843776.

The previous prime is 12143189. The next prime is 12143221. The reversal of 12143210 is 1234121.

12143210 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 8567329 + 3575881 = 2927^2 + 1891^2 .

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2606 + ... + 5574.

Almost surely, 212143210 is an apocalyptic number.

12143210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12143210 is a deficient number, since it is larger than the sum of its proper divisors (9775390).

12143210 is a wasteful number, since it uses less digits than its factorization.

12143210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3385.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 12143210 is about 3484.7108918819. The cubic root of 12143210 is about 229.8499967088.

Adding to 12143210 its reverse (1234121), we get a palindrome (13377331).

The spelling of 12143210 in words is "twelve million, one hundred forty-three thousand, two hundred ten".

Divisors: 1 2 5 10 409 818 2045 2969 4090 5938 14845 29690 1214321 2428642 6071605 12143210