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129349 = 1121069
BaseRepresentation
bin11111100101000101
320120102201
4133211011
513114344
62434501
71046053
oct374505
9216381
10129349
1189200
1262a31
1346b4c
14351d3
15284d4
hex1f945

129349 has 6 divisors (see below), whose sum is σ = 142310. Its totient is φ = 117480.

The previous prime is 129347. The next prime is 129361. The reversal of 129349 is 943921.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 108900 + 20449 = 330^2 + 143^2 .

It is not a de Polignac number, because 129349 - 21 = 129347 is a prime.

It is a Duffinian number.

129349 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129341) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 414 + ... + 655.

2129349 is an apocalyptic number.

It is an amenable number.

129349 is a deficient number, since it is larger than the sum of its proper divisors (12961).

129349 is a wasteful number, since it uses less digits than its factorization.

129349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1091 (or 1080 counting only the distinct ones).

The product of its digits is 1944, while the sum is 28.

The square root of 129349 is about 359.6512199340. The cubic root of 129349 is about 50.5732688046.

The spelling of 129349 in words is "one hundred twenty-nine thousand, three hundred forty-nine".

Divisors: 1 11 121 1069 11759 129349