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104220143 = 311335113
BaseRepresentation
bin1100011011001…
…00010111101111
321021002221011022
412031210113233
5203140021033
614201444355
72403566546
oct615442757
9237087138
10104220143
1153914155
122aaa06bb
1318790631
14dbad15d
15923a098
hex63645ef

104220143 has 4 divisors (see below), whose sum is σ = 104555568. Its totient is φ = 103884720.

The previous prime is 104220133. The next prime is 104220161. The reversal of 104220143 is 341022401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 341022401 = 972135081.

It is a cyclic number.

It is not a de Polignac number, because 104220143 - 222 = 100025839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104220133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 167246 + ... + 167867.

It is an arithmetic number, because the mean of its divisors is an integer number (26138892).

Almost surely, 2104220143 is an apocalyptic number.

104220143 is a deficient number, since it is larger than the sum of its proper divisors (335425).

104220143 is an equidigital number, since it uses as much as digits as its factorization.

104220143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335424.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 104220143 is about 10208.8267200497. The cubic root of 104220143 is about 470.5985177162.

Adding to 104220143 its reverse (341022401), we get a palindrome (445242544).

The spelling of 104220143 in words is "one hundred four million, two hundred twenty thousand, one hundred forty-three".

Divisors: 1 311 335113 104220143