129153543 has 4 divisors (see below), whose sum is σ = 172204728. Its totient is φ = 86102360.

The previous prime is 129153529. The next prime is 129153547. The reversal of 129153543 is 345351921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 345351921 = 3 ⋅115117307.

It is a cyclic number.

It is not a de Polignac number, because 129153543 - 2¹⁷ = 129022471 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129153547) 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, 21525588 + ... + 21525593.

It is an arithmetic number, because the mean of its divisors is an integer number (43051182).

Almost surely, 2^129153543 is an apocalyptic number.

129153543 is a deficient number, since it is larger than the sum of its proper divisors (43051185).

129153543 is an equidigital number, since it uses as much as digits as its factorization.

129153543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43051184.

The product of its digits is 16200, while the sum is 33.

The square root of 129153543 is about 11364.5740351322. The cubic root of 129153543 is about 505.4778250381.

The spelling of 129153543 in words is "one hundred twenty-nine million, one hundred fifty-three thousand, five hundred forty-three".