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130121125 = 531995231
BaseRepresentation
bin1111100000101…
…11110110100101
3100001211211121221
413300113312211
5231302334000
620524540341
73140003611
oct760276645
9301754557
10130121125
11674a4a22
12376b16b1
1320c5b964
14133d2341
15b65461a
hex7c17da5

130121125 has 16 divisors (see below), whose sum is σ = 163238400. Its totient is φ = 103554000.

The previous prime is 130121099. The next prime is 130121149. The reversal of 130121125 is 521121031.

It is not a de Polignac number, because 130121125 - 27 = 130120997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 130121099 and 130121108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22260 + ... + 27490.

It is an arithmetic number, because the mean of its divisors is an integer number (10202400).

Almost surely, 2130121125 is an apocalyptic number.

It is an amenable number.

130121125 is a deficient number, since it is larger than the sum of its proper divisors (33117275).

130121125 is an equidigital number, since it uses as much as digits as its factorization.

130121125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5445 (or 5435 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 130121125 is about 11407.0646969323. The cubic root of 130121125 is about 506.7369850368.

Adding to 130121125 its reverse (521121031), we get a palindrome (651242156).

The spelling of 130121125 in words is "one hundred thirty million, one hundred twenty-one thousand, one hundred twenty-five".

Divisors: 1 5 25 125 199 995 4975 5231 24875 26155 130775 653875 1040969 5204845 26024225 130121125