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129010 = 2571997
BaseRepresentation
bin11111011111110010
320112222011
4133133302
513112020
62433134
71045060
oct373762
9215864
10129010
1188a22
12627aa
134694b
1435030
152835a
hex1f7f2

129010 has 32 divisors (see below), whose sum is σ = 282240. Its totient is φ = 41472.

The previous prime is 129001. The next prime is 129011. The reversal of 129010 is 10921.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129011) by changing a digit.

129010 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1282 + ... + 1378.

It is an arithmetic number, because the mean of its divisors is an integer number (8820).

2129010 is an apocalyptic number.

129010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129010 is an abundant number, since it is smaller than the sum of its proper divisors (153230).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

129010 is a wasteful number, since it uses less digits than its factorization.

129010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 129010 is about 359.1796208027. The cubic root of 129010 is about 50.5290490648.

Adding to 129010 its reverse (10921), we get a palindrome (139931).

The spelling of 129010 in words is "one hundred twenty-nine thousand, ten".

Divisors: 1 2 5 7 10 14 19 35 38 70 95 97 133 190 194 266 485 665 679 970 1330 1358 1843 3395 3686 6790 9215 12901 18430 25802 64505 129010