129741 has 8 divisors (see below), whose sum is σ = 176160. Its totient is φ = 84912.

The previous prime is 129737. The next prime is 129749. The reversal of 129741 is 147921.

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

It is not a de Polignac number, because 129741 - 2² = 129737 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129749) 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, 190 + ... + 543.

It is an arithmetic number, because the mean of its divisors is an integer number (22020).

2¹²⁹⁷⁴¹ is an apocalyptic number.

It is an amenable number.

129741 is a deficient number, since it is larger than the sum of its proper divisors (46419).

129741 is an equidigital number, since it uses as much as digits as its factorization.

129741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 795.

The product of its digits is 504, while the sum is 24.

The square root of 129741 is about 360.1957800974. The cubic root of 129741 is about 50.6243057366.

The spelling of 129741 in words is "one hundred twenty-nine thousand, seven hundred forty-one".