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130840241 = 728293221
BaseRepresentation
bin1111100110001…
…11011010110001
3100010012101001212
413303013122301
5231443341431
620552205505
73146060300
oct763073261
9303171055
10130840241
1167946234
1237999895
132115107c
141353c437
15b74772b
hex7cc76b1

130840241 has 12 divisors (see below), whose sum is σ = 152432820. Its totient is φ = 111978720.

The previous prime is 130840223. The next prime is 130840247. The reversal of 130840241 is 142048031.

It can be written as a sum of positive squares in 2 ways, for example, as 88642225 + 42198016 = 9415^2 + 6496^2 .

It is not a de Polignac number, because 130840241 - 210 = 130839217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130840247) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39011 + ... + 42231.

It is an arithmetic number, because the mean of its divisors is an integer number (12702735).

Almost surely, 2130840241 is an apocalyptic number.

It is an amenable number.

130840241 is a deficient number, since it is larger than the sum of its proper divisors (21592579).

130840241 is an equidigital number, since it uses as much as digits as its factorization.

130840241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4064 (or 4057 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 130840241 is about 11438.5419088274. The cubic root of 130840241 is about 507.6687667012.

Adding to 130840241 its reverse (142048031), we get a palindrome (272888272).

The spelling of 130840241 in words is "one hundred thirty million, eight hundred forty thousand, two hundred forty-one".

Divisors: 1 7 49 829 3221 5803 22547 40621 157829 2670209 18691463 130840241