129452429 has 8 divisors (see below), whose sum is σ = 132392448. Its totient is φ = 126520240.

The previous prime is 129452423. The next prime is 129452459. The reversal of 129452429 is 924254921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 129452429 - 2⁸ = 129452173 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 129452392 and 129452401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129452423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42764 + ... + 45690.

It is an arithmetic number, because the mean of its divisors is an integer number (16549056).

Almost surely, 2^129452429 is an apocalyptic number.

It is an amenable number.

129452429 is a deficient number, since it is larger than the sum of its proper divisors (2940019).

129452429 is an equidigital number, since it uses as much as digits as its factorization.

129452429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3915.

The product of its digits is 51840, while the sum is 38.

The square root of 129452429 is about 11377.7163350120. The cubic root of 129452429 is about 505.8674487589.

The spelling of 129452429 in words is "one hundred twenty-nine million, four hundred fifty-two thousand, four hundred twenty-nine".