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1230130123 = 1398849857
BaseRepresentation
bin100100101010010…
…0100101111001011
310011201201002021221
41021110210233023
510004403130443
6322021542511
742324635125
oct11124445713
93151632257
101230130123
11581415a72
122a3b74a37
13167b13761
14b9534215
1572edceed
hex49524bcb

1230130123 has 4 divisors (see below), whose sum is σ = 1238980120. Its totient is φ = 1221280128.

The previous prime is 1230130103. The next prime is 1230130141. The reversal of 1230130123 is 3210310321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1230130123 - 217 = 1229999051 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1230130097 and 1230130106.

It is not an unprimeable number, because it can be changed into a prime (1230130103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4424790 + ... + 4425067.

It is an arithmetic number, because the mean of its divisors is an integer number (309745030).

Almost surely, 21230130123 is an apocalyptic number.

1230130123 is a deficient number, since it is larger than the sum of its proper divisors (8849997).

1230130123 is an equidigital number, since it uses as much as digits as its factorization.

1230130123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8849996.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 1230130123 is about 35073.2109023397. The cubic root of 1230130123 is about 1071.4790513266.

Adding to 1230130123 its reverse (3210310321), we get a palindrome (4440440444).

It can be divided in two parts, 12301 and 30123, that added together give a palindrome (42424).

The spelling of 1230130123 in words is "one billion, two hundred thirty million, one hundred thirty thousand, one hundred twenty-three".

Divisors: 1 139 8849857 1230130123