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1230054105 = 35721673543
BaseRepresentation
bin100100101010001…
…0010001011011001
310011201120020000110
41021110102023121
510004343212410
6322020154533
742324200400
oct11124221331
93151506013
101230054105
11581373945
122a3b38a49
13167ab7c87
14b9514637
1572ec5720
hex495122d9

1230054105 has 24 divisors (see below), whose sum is σ = 2289408192. Its totient is φ = 562310112.

The previous prime is 1230054103. The next prime is 1230054121. The reversal of 1230054105 is 5014500321.

It is not a de Polignac number, because 1230054105 - 21 = 1230054103 is a prime.

It is a super-3 number, since 3×12300541053 (a number of 28 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (1230054101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 836037 + ... + 837506.

It is an arithmetic number, because the mean of its divisors is an integer number (95392008).

Almost surely, 21230054105 is an apocalyptic number.

1230054105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1230054105 is a deficient number, since it is larger than the sum of its proper divisors (1059354087).

1230054105 is a wasteful number, since it uses less digits than its factorization.

1230054105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1673565 (or 1673558 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 1230054105 is about 35072.1271809966. The cubic root of 1230054105 is about 1071.4569795769.

Adding to 1230054105 its reverse (5014500321), we get a palindrome (6244554426).

The spelling of 1230054105 in words is "one billion, two hundred thirty million, fifty-four thousand, one hundred five".

Divisors: 1 3 5 7 15 21 35 49 105 147 245 735 1673543 5020629 8367715 11714801 25103145 35144403 58574005 82003607 175722015 246010821 410018035 1230054105