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1230404043 = 311311202741
BaseRepresentation
bin100100101010110…
…0111100111001011
310011202020000001010
41021111213213023
510004440412133
6322031455003
742330155541
oct11125474713
93152200033
101230404043
11581592850
122a4087463
13167bab33b
14b95a5d91
1573044263
hex495679cb

1230404043 has 16 divisors (see below), whose sum is σ = 1847411712. Its totient is φ = 721644000.

The previous prime is 1230404041. The next prime is 1230404057. The reversal of 1230404043 is 3404040321.

It is not a de Polignac number, because 1230404043 - 21 = 1230404041 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1230404041) 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 15 ways as a sum of consecutive naturals, for example, 600348 + ... + 602393.

It is an arithmetic number, because the mean of its divisors is an integer number (115463232).

Almost surely, 21230404043 is an apocalyptic number.

1230404043 is a deficient number, since it is larger than the sum of its proper divisors (617007669).

1230404043 is a wasteful number, since it uses less digits than its factorization.

1230404043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1202786.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 1230404043 is about 35077.1156596434. The cubic root of 1230404043 is about 1071.5585761817.

Adding to 1230404043 its reverse (3404040321), we get a palindrome (4634444364).

The spelling of 1230404043 in words is "one billion, two hundred thirty million, four hundred four thousand, forty-three".

Divisors: 1 3 11 31 33 93 341 1023 1202741 3608223 13230151 37284971 39690453 111854913 410134681 1230404043