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12140030 = 257173429
BaseRepresentation
bin101110010011…
…110111111110
3211211202222202
4232103313332
511101440110
61112111502
7205121450
oct56236776
924752882
1012140030
116941a91
124095592
132690966
1418802d0
1510ec0a5
hexb93dfe

12140030 has 16 divisors (see below), whose sum is σ = 24973920. Its totient is φ = 4162272.

The previous prime is 12139991. The next prime is 12140039. The reversal of 12140030 is 3004121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12139993 and 12140020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12140039) by changing a digit.

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, 86645 + ... + 86784.

It is an arithmetic number, because the mean of its divisors is an integer number (1560870).

Almost surely, 212140030 is an apocalyptic number.

12140030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12140030 is an abundant number, since it is smaller than the sum of its proper divisors (12833890).

12140030 is a wasteful number, since it uses less digits than its factorization.

12140030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173443.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 12140030 is about 3484.2545831210. The cubic root of 12140030 is about 229.8299309876.

Adding to 12140030 its reverse (3004121), we get a palindrome (15144151).

The spelling of 12140030 in words is "twelve million, one hundred forty thousand, thirty".

Divisors: 1 2 5 7 10 14 35 70 173429 346858 867145 1214003 1734290 2428006 6070015 12140030