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130026243 = 343342081
BaseRepresentation
bin1111100000000…
…00101100000011
3100001200000110210
413300000230003
5231241314433
620522525203
73136130154
oct760005403
9301600423
10130026243
116743a706
1237666803
1320c27709
14133a992b
15b636463
hex7c00b03

130026243 has 4 divisors (see below), whose sum is σ = 173368328. Its totient is φ = 86684160.

The previous prime is 130026233. The next prime is 130026317. The reversal of 130026243 is 342620031.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 130026243 - 216 = 129960707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130026233) 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, 21671038 + ... + 21671043.

It is an arithmetic number, because the mean of its divisors is an integer number (43342082).

Almost surely, 2130026243 is an apocalyptic number.

130026243 is a deficient number, since it is larger than the sum of its proper divisors (43342085).

130026243 is an equidigital number, since it uses as much as digits as its factorization.

130026243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43342084.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 130026243 is about 11402.9050245979. The cubic root of 130026243 is about 506.6137872348.

Adding to 130026243 its reverse (342620031), we get a palindrome (472646274).

The spelling of 130026243 in words is "one hundred thirty million, twenty-six thousand, two hundred forty-three".

Divisors: 1 3 43342081 130026243