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129942713 = 1771910631
BaseRepresentation
bin1111011111011…
…00010010111001
3100001111202220002
413233230102321
5231231131323
620521042345
73135331505
oct757542271
9301452802
10129942713
116739297a
12376263b5
1320bc86a4
1413387305
15b61b828
hex7bec4b9

129942713 has 8 divisors (see below), whose sum is σ = 137790720. Its totient is φ = 122117440.

The previous prime is 129942677. The next prime is 129942737. The reversal of 129942713 is 317249921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 129942713 - 216 = 129877177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129942763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6908 + ... + 17538.

It is an arithmetic number, because the mean of its divisors is an integer number (17223840).

Almost surely, 2129942713 is an apocalyptic number.

It is an amenable number.

129942713 is a deficient number, since it is larger than the sum of its proper divisors (7848007).

129942713 is a wasteful number, since it uses less digits than its factorization.

129942713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11367.

The product of its digits is 27216, while the sum is 38.

The square root of 129942713 is about 11399.2417730303. The cubic root of 129942713 is about 506.5052796146.

The spelling of 129942713 in words is "one hundred twenty-nine million, nine hundred forty-two thousand, seven hundred thirteen".

Divisors: 1 17 719 10631 12223 180727 7643689 129942713