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129052 = 22711419
BaseRepresentation
bin11111100000011100
320120000201
4133200130
513112202
62433244
71045150
oct374034
9216021
10129052
1188a60
1262824
1346981
1435060
1528387
hex1f81c

129052 has 24 divisors (see below), whose sum is σ = 282240. Its totient is φ = 50160.

The previous prime is 129049. The next prime is 129061. The reversal of 129052 is 250921.

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

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99 + ... + 517.

It is an arithmetic number, because the mean of its divisors is an integer number (11760).

2129052 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 129052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (141120).

129052 is an abundant number, since it is smaller than the sum of its proper divisors (153188).

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

129052 is a wasteful number, since it uses less digits than its factorization.

129052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441 (or 439 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 129052 is about 359.2380826137. The cubic root of 129052 is about 50.5345318176.

Adding to 129052 its reverse (250921), we get a palindrome (379973).

The spelling of 129052 in words is "one hundred twenty-nine thousand, fifty-two".

Divisors: 1 2 4 7 11 14 22 28 44 77 154 308 419 838 1676 2933 4609 5866 9218 11732 18436 32263 64526 129052