129030433 has 16 divisors (see below), whose sum is σ = 153950464. Its totient is φ = 105831360.

The previous prime is 129030431. The next prime is 129030439. The reversal of 129030433 is 334030921.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 129030433 - 2¹ = 129030431 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 129030398 and 129030407.

It is not an unprimeable number, because it can be changed into a prime (129030431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11716 + ... + 19882.

It is an arithmetic number, because the mean of its divisors is an integer number (9621904).

Almost surely, 2^129030433 is an apocalyptic number.

It is an amenable number.

129030433 is a deficient number, since it is larger than the sum of its proper divisors (24920031).

129030433 is an equidigital number, since it uses as much as digits as its factorization.

129030433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8272.

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 129030433 is about 11359.1563507155. The cubic root of 129030433 is about 505.3171657263.

The spelling of 129030433 in words is "one hundred twenty-nine million, thirty thousand, four hundred thirty-three".