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129055329 = 3313228283
BaseRepresentation
bin1111011000100…
…11101001100001
322222211200122000
413230103221201
5231014232304
620450034213
73124644414
oct754235141
9288750560
10129055329
11669371a7
1237278969
1320977800
14131d5b7b
15b4e3939
hex7b13a61

129055329 has 24 divisors (see below), whose sum is σ = 207038880. Its totient is φ = 79415856.

The previous prime is 129055273. The next prime is 129055337. The reversal of 129055329 is 923550921.

It is a happy number.

129055329 is a `hidden beast` number, since 12 + 90 + 553 + 2 + 9 = 666.

It is not a de Polignac number, because 129055329 - 221 = 126958177 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 129055293 and 129055302.

It is not an unprimeable number, because it can be changed into a prime (129055529) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9579 + ... + 18704.

It is an arithmetic number, because the mean of its divisors is an integer number (8626620).

Almost surely, 2129055329 is an apocalyptic number.

It is an amenable number.

129055329 is a deficient number, since it is larger than the sum of its proper divisors (77983551).

129055329 is a wasteful number, since it uses less digits than its factorization.

129055329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28318 (or 28299 counting only the distinct ones).

The product of its (nonzero) digits is 24300, while the sum is 36.

The square root of 129055329 is about 11360.2521538917. The cubic root of 129055329 is about 505.3496634010.

The spelling of 129055329 in words is "one hundred twenty-nine million, fifty-five thousand, three hundred twenty-nine".

Divisors: 1 3 9 13 27 39 117 169 351 507 1521 4563 28283 84849 254547 367679 763641 1103037 3309111 4779827 9927333 14339481 43018443 129055329