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12141409 = 74493863
BaseRepresentation
bin101110010100…
…001101100001
3211211211212211
4232110031201
511102011114
61112122121
7205125460
oct56241541
924754784
1012141409
116943025
124096341
132691487
1418809d7
1510ec6c4
hexb94361

12141409 has 8 divisors (see below), whose sum is σ = 13910400. Its totient is φ = 10381056.

The previous prime is 12141407. The next prime is 12141413. The reversal of 12141409 is 90414121.

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

It is not a de Polignac number, because 12141409 - 21 = 12141407 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12141409.

It is not an unprimeable number, because it can be changed into a prime (12141403) by changing a digit.

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, 1212 + ... + 5074.

It is an arithmetic number, because the mean of its divisors is an integer number (1738800).

Almost surely, 212141409 is an apocalyptic number.

It is an amenable number.

12141409 is a deficient number, since it is larger than the sum of its proper divisors (1768991).

12141409 is an equidigital number, since it uses as much as digits as its factorization.

12141409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4319.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 12141409 is about 3484.4524677487. The cubic root of 12141409 is about 229.8386328737.

The spelling of 12141409 in words is "twelve million, one hundred forty-one thousand, four hundred nine".

Divisors: 1 7 449 3143 3863 27041 1734487 12141409