Search a number
-
+
130130123 = 197660559
BaseRepresentation
bin1111100000110…
…10000011001011
3100001212021222012
413300122003023
5231303130443
620525050135
73140042054
oct760320313
9301767865
10130130123
1167500762
12376b694b
1320c62a96
14133d572b
15b657118
hex7c1a0cb

130130123 has 4 divisors (see below), whose sum is σ = 130790880. Its totient is φ = 129469368.

The previous prime is 130130101. The next prime is 130130129. The reversal of 130130123 is 321031031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 321031031 = 1163276037.

It is a cyclic number.

It is not a de Polignac number, because 130130123 - 218 = 129867979 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 130130098 and 130130107.

It is not an unprimeable number, because it can be changed into a prime (130130129) 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 3 ways as a sum of consecutive naturals, for example, 330083 + ... + 330476.

It is an arithmetic number, because the mean of its divisors is an integer number (32697720).

Almost surely, 2130130123 is an apocalyptic number.

130130123 is a deficient number, since it is larger than the sum of its proper divisors (660757).

130130123 is an equidigital number, since it uses as much as digits as its factorization.

130130123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660756.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 130130123 is about 11407.4590948204. The cubic root of 130130123 is about 506.7486652163.

Adding to 130130123 its reverse (321031031), we get a palindrome (451161154).

The spelling of 130130123 in words is "one hundred thirty million, one hundred thirty thousand, one hundred twenty-three".

Divisors: 1 197 660559 130130123