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129000197 is a prime number
BaseRepresentation
bin1111011000001…
…10001100000101
322222201220000002
413230012030011
5231011001242
620444531045
73124324604
oct754061405
9288656002
10129000197
11668a9837
1237250a85
13209586a1
14131bda3b
15b4d2432
hex7b06305

129000197 has 2 divisors, whose sum is σ = 129000198. Its totient is φ = 129000196.

The previous prime is 129000181. The next prime is 129000211. The reversal of 129000197 is 791000921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 96805921 + 32194276 = 9839^2 + 5674^2 .

It is a cyclic number.

It is not a de Polignac number, because 129000197 - 24 = 129000181 is a prime.

It is equal to p7324742 and since 129000197 and 7324742 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129002197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64500098 + 64500099.

It is an arithmetic number, because the mean of its divisors is an integer number (64500099).

Almost surely, 2129000197 is an apocalyptic number.

It is an amenable number.

129000197 is a deficient number, since it is larger than the sum of its proper divisors (1).

129000197 is an equidigital number, since it uses as much as digits as its factorization.

129000197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1134, while the sum is 29.

The square root of 129000197 is about 11357.8253640387. The cubic root of 129000197 is about 505.2776919291.

The spelling of 129000197 in words is "one hundred twenty-nine million, one hundred ninety-seven", and thus it is an aban number.