129908941 has 6 divisors (see below), whose sum is σ = 134235726. Its totient is φ = 125717400.

The previous prime is 129908929. The next prime is 129908953. The reversal of 129908941 is 149809921.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (129908929) and next prime (129908953).

It can be written as a sum of positive squares in only one way, i.e., 128731716 + 1177225 = 11346^2 + 1085^2 .

It is not a de Polignac number, because 129908941 - 2¹¹ = 129906893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129908971) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 66630 + ... + 68551.

It is an arithmetic number, because the mean of its divisors is an integer number (22372621).

Almost surely, 2^129908941 is an apocalyptic number.

129908941 is the 6581-st hex number.

It is an amenable number.

129908941 is a deficient number, since it is larger than the sum of its proper divisors (4326785).

129908941 is an equidigital number, since it uses as much as digits as its factorization.

129908941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135243 (or 135212 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 43.

The square root of 129908941 is about 11397.7603501741. The cubic root of 129908941 is about 506.4613957162.

The spelling of 129908941 in words is "one hundred twenty-nine million, nine hundred eight thousand, nine hundred forty-one".