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130041493 = 401324293
BaseRepresentation
bin1111100000001…
…00011010010101
3100001200210101121
413300010122111
5231242311433
620523123541
73136222501
oct760043225
9301623347
10130041493
116745010a
12376735b1
1320c3163a
14133b1301
15b63ac2d
hex7c04695

130041493 has 4 divisors (see below), whose sum is σ = 130366188. Its totient is φ = 129716800.

The previous prime is 130041479. The next prime is 130041511. The reversal of 130041493 is 394140031.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 394140031 = 1632418037.

It can be written as a sum of positive squares in 2 ways, for example, as 93354244 + 36687249 = 9662^2 + 6057^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-130041493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130041403) 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, 161746 + ... + 162547.

It is an arithmetic number, because the mean of its divisors is an integer number (32591547).

Almost surely, 2130041493 is an apocalyptic number.

It is an amenable number.

130041493 is a deficient number, since it is larger than the sum of its proper divisors (324695).

130041493 is an equidigital number, since it uses as much as digits as its factorization.

130041493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324694.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 130041493 is about 11403.5736942416. The cubic root of 130041493 is about 506.6335923605.

The spelling of 130041493 in words is "one hundred thirty million, forty-one thousand, four hundred ninety-three".

Divisors: 1 401 324293 130041493