129469234 has 4 divisors (see below), whose sum is σ = 194203854. Its totient is φ = 64734616.

The previous prime is 129469199. The next prime is 129469271. The reversal of 129469234 is 432964921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 432964921 = 67 ⋅6462163.

It can be written as a sum of positive squares in only one way, i.e., 126630009 + 2839225 = 11253^2 + 1685^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32367307 + ... + 32367310.

Almost surely, 2^129469234 is an apocalyptic number.

129469234 is a deficient number, since it is larger than the sum of its proper divisors (64734620).

129469234 is an equidigital number, since it uses as much as digits as its factorization.

129469234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64734619.

The product of its digits is 93312, while the sum is 40.

The square root of 129469234 is about 11378.4548160108. The cubic root of 129469234 is about 505.8893377126.

The spelling of 129469234 in words is "one hundred twenty-nine million, four hundred sixty-nine thousand, two hundred thirty-four".