129230199 has 36 divisors (see below), whose sum is σ = 218476440. Its totient is φ = 73392480.

The previous prime is 129230197. The next prime is 129230201. The reversal of 129230199 is 991032921.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (129230197) and next prime (129230201).

It is not a de Polignac number, because 129230199 - 2¹ = 129230197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129230197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 79012 + ... + 80630.

It is an arithmetic number, because the mean of its divisors is an integer number (6068790).

Almost surely, 2^129230199 is an apocalyptic number.

129230199 is a deficient number, since it is larger than the sum of its proper divisors (89246241).

129230199 is a wasteful number, since it uses less digits than its factorization.

129230199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1820 (or 1810 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 36.

The square root of 129230199 is about 11367.9461205620. The cubic root of 129230199 is about 505.5778100219.

The spelling of 129230199 in words is "one hundred twenty-nine million, two hundred thirty thousand, one hundred ninety-nine".