129854323 has 4 divisors (see below), whose sum is σ = 130513680. Its totient is φ = 129194968.

The previous prime is 129854321. The next prime is 129854327. The reversal of 129854323 is 323458921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 323458921 = 37 ⋅8742133.

It is a cyclic number.

It is not a de Polignac number, because 129854323 - 2¹ = 129854321 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129854321) 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 3 ways as a sum of consecutive naturals, for example, 329383 + ... + 329776.

It is an arithmetic number, because the mean of its divisors is an integer number (32628420).

Almost surely, 2^129854323 is an apocalyptic number.

129854323 is a deficient number, since it is larger than the sum of its proper divisors (659357).

129854323 is an equidigital number, since it uses as much as digits as its factorization.

129854323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 659356.

The product of its digits is 51840, while the sum is 37.

The square root of 129854323 is about 11395.3641012475. The cubic root of 129854323 is about 506.3904080797.

The spelling of 129854323 in words is "one hundred twenty-nine million, eight hundred fifty-four thousand, three hundred twenty-three".