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138830041 = 7171166639
BaseRepresentation
bin10000100011001…
…10000011011001
3100200020022000101
420101212003121
5241020030131
621435335401
73304015210
oct1021460331
9320208011
10138830041
1171403079
123a5b1561
13229ba96c
141461c077
15c2c4c61
hex84660d9

138830041 has 8 divisors (see below), whose sum is σ = 167996160. Its totient is φ = 111997248.

The previous prime is 138829987. The next prime is 138830051. The reversal of 138830041 is 140038831.

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

It is a cyclic number.

It is not a de Polignac number, because 138830041 - 211 = 138827993 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 138829991 and 138830009.

It is not an unprimeable number, because it can be changed into a prime (138830051) 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, 583201 + ... + 583438.

It is an arithmetic number, because the mean of its divisors is an integer number (20999520).

Almost surely, 2138830041 is an apocalyptic number.

It is an amenable number.

138830041 is a deficient number, since it is larger than the sum of its proper divisors (29166119).

138830041 is a wasteful number, since it uses less digits than its factorization.

138830041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1166663.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 138830041 is about 11782.6160507758. The cubic root of 138830041 is about 517.7989323638.

Adding to 138830041 its reverse (140038831), we get a palindrome (278868872).

The spelling of 138830041 in words is "one hundred thirty-eight million, eight hundred thirty thousand, forty-one".

Divisors: 1 7 17 119 1166639 8166473 19832863 138830041