129034419 has 4 divisors (see below), whose sum is σ = 172045896. Its totient is φ = 86022944.

The previous prime is 129034417. The next prime is 129034463. The reversal of 129034419 is 914430921.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 129034419 - 2¹ = 129034417 is a prime.

It is a super-2 number, since 2×129034419² = 33299762573335122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 129034419.

It is not an unprimeable number, because it can be changed into a prime (129034417) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21505734 + ... + 21505739.

It is an arithmetic number, because the mean of its divisors is an integer number (43011474).

Almost surely, 2^129034419 is an apocalyptic number.

129034419 is a deficient number, since it is larger than the sum of its proper divisors (43011477).

129034419 is an equidigital number, since it uses as much as digits as its factorization.

129034419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43011476.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 129034419 is about 11359.3318025313. The cubic root of 129034419 is about 505.3223690814.

The spelling of 129034419 in words is "one hundred twenty-nine million, thirty-four thousand, four hundred nineteen".