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2104023123 = 321391681873
BaseRepresentation
bin111110101101000…
…1101100001010011
312102122002110010100
41331122031201103
513302112214443
6544440303443
7103065621126
oct17532154123
95378073110
102104023123
1198a736794
124a8771b83
13276b990c7
1415d6163bd
15c4aae3d3
hex7d68d853

2104023123 has 12 divisors (see below), whose sum is σ = 3061010680. Its totient is φ = 1392590016.

The previous prime is 2104023091. The next prime is 2104023137. The reversal of 2104023123 is 3213204012.

2104023123 is a `hidden beast` number, since 210 + 402 + 31 + 23 = 666.

It is not a de Polignac number, because 2104023123 - 25 = 2104023091 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2104023096 and 2104023105.

It is not an unprimeable number, because it can be changed into a prime (2104023223) 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 11 ways as a sum of consecutive naturals, for example, 839686 + ... + 842187.

Almost surely, 22104023123 is an apocalyptic number.

2104023123 is a deficient number, since it is larger than the sum of its proper divisors (956987557).

2104023123 is a wasteful number, since it uses less digits than its factorization.

2104023123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1682018 (or 1682015 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 2104023123 is about 45869.6318167042. The cubic root of 2104023123 is about 1281.3964095930.

Adding to 2104023123 its reverse (3213204012), we get a palindrome (5317227135).

The spelling of 2104023123 in words is "two billion, one hundred four million, twenty-three thousand, one hundred twenty-three".

Divisors: 1 3 9 139 417 1251 1681873 5045619 15136857 233780347 701341041 2104023123