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130612125 = 353749757
BaseRepresentation
bin1111100100011…
…11101110011101
3100002202210011010
413302033232131
5231414042000
620543245433
73144120240
oct762175635
9302683133
10130612125
11677aa906
12378a9879
13210a12a7
14134bd257
15b6eed50
hex7c8fb9d

130612125 has 32 divisors (see below), whose sum is σ = 248391936. Its totient is φ = 59707200.

The previous prime is 130612121. The next prime is 130612151. The reversal of 130612125 is 521216031.

130612125 = T47 + T48 + ... + T921.

It is not a de Polignac number, because 130612125 - 22 = 130612121 is a prime.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130612121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22254 + ... + 27503.

It is an arithmetic number, because the mean of its divisors is an integer number (7762248).

Almost surely, 2130612125 is an apocalyptic number.

130612125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

130612125 is a deficient number, since it is larger than the sum of its proper divisors (117779811).

130612125 is an equidigital number, since it uses as much as digits as its factorization.

130612125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49782 (or 49772 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 130612125 is about 11428.5661830345. The cubic root of 130612125 is about 507.3735600304.

Adding to 130612125 its reverse (521216031), we get a palindrome (651828156).

It can be divided in two parts, 1306 and 12125, that added together give a palindrome (13431).

The spelling of 130612125 in words is "one hundred thirty million, six hundred twelve thousand, one hundred twenty-five".

Divisors: 1 3 5 7 15 21 25 35 75 105 125 175 375 525 875 2625 49757 149271 248785 348299 746355 1044897 1243925 1741495 3731775 5224485 6219625 8707475 18658875 26122425 43537375 130612125