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104020230010021 = 1317470679773801
BaseRepresentation
bin10111101001101100011000…
…110110111111010010100101
3111122022020101200100012220021
4113221230120312333102211
5102113231412340310041
61005122122312035141
730624133161326413
oct2751543066772245
9448266350305807
10104020230010021
1130164806047796
12b7bb998692ab1
1346070b117ccc0
141b9886abcc2b3
15c05c117cbcd1
hex5e9b18dbf4a5

104020230010021 has 8 divisors (see below), whose sum is σ = 118611302998104. Its totient is φ = 90370516569600.

The previous prime is 104020230010019. The next prime is 104020230010033. The reversal of 104020230010021 is 120010032020401.

It can be written as a sum of positive squares in 4 ways, for example, as 121166648100 + 103899063361921 = 348090^2 + 10193089^2 .

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 104020230010021 - 21 = 104020230010019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 104020230009977 and 104020230010004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104020230010061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 235339886680 + ... + 235339887121.

It is an arithmetic number, because the mean of its divisors is an integer number (14826412874763).

Almost surely, 2104020230010021 is an apocalyptic number.

It is an amenable number.

104020230010021 is a deficient number, since it is larger than the sum of its proper divisors (14591072988083).

104020230010021 is a wasteful number, since it uses less digits than its factorization.

104020230010021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470679773831.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 104020230010021 its reverse (120010032020401), we get a palindrome (224030262030422).

The spelling of 104020230010021 in words is "one hundred four trillion, twenty billion, two hundred thirty million, ten thousand, twenty-one".

Divisors: 1 13 17 221 470679773801 6118837059413 8001556154617 104020230010021