129610541 has 4 divisors (see below), whose sum is σ = 134079900. Its totient is φ = 125141184.

The previous prime is 129610511. The next prime is 129610549. The reversal of 129610541 is 145016921.

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

It can be written as a sum of positive squares in 2 ways, for example, as 58461316 + 71149225 = 7646^2 + 8435^2 .

It is a cyclic number.

It is not a de Polignac number, because 129610541 - 2⁶ = 129610477 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 4469329 = 129610541 / (1 + 2 + 9 + 6 + 1 + 0 + 5 + 4 + 1).

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

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129610549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2234636 + ... + 2234693.

It is an arithmetic number, because the mean of its divisors is an integer number (33519975).

Almost surely, 2^129610541 is an apocalyptic number.

It is an amenable number.

129610541 is a deficient number, since it is larger than the sum of its proper divisors (4469359).

129610541 is an equidigital number, since it uses as much as digits as its factorization.

129610541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4469358.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 129610541 is about 11384.6625334263. The cubic root of 129610541 is about 506.0733189074.

The spelling of 129610541 in words is "one hundred twenty-nine million, six hundred ten thousand, five hundred forty-one".