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130147123 = 137949979
BaseRepresentation
bin1111100000111…
…10001100110011
3100001220011021211
413300132030303
5231304201443
620525300551
73140142451
oct760361463
9301804254
10130147123
1167512507
1237704757
1320c6a742
14133db9d1
15b65c19d
hex7c1e333

130147123 has 4 divisors (see below), whose sum is σ = 131097240. Its totient is φ = 129197008.

The previous prime is 130147109. The next prime is 130147153. The reversal of 130147123 is 321741031.

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 130147123 - 25 = 130147091 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 130147094 and 130147103.

It is not an unprimeable number, because it can be changed into a prime (130147153) 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, 474853 + ... + 475126.

It is an arithmetic number, because the mean of its divisors is an integer number (32774310).

Almost surely, 2130147123 is an apocalyptic number.

130147123 is a deficient number, since it is larger than the sum of its proper divisors (950117).

130147123 is an equidigital number, since it uses as much as digits as its factorization.

130147123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 950116.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 130147123 is about 11408.2041969803. The cubic root of 130147123 is about 506.7707312120.

Adding to 130147123 its reverse (321741031), we get a palindrome (451888154).

The spelling of 130147123 in words is "one hundred thirty million, one hundred forty-seven thousand, one hundred twenty-three".

Divisors: 1 137 949979 130147123