129020941 has 16 divisors (see below), whose sum is σ = 151360000. Its totient is φ = 107675568.

The previous prime is 129020933. The next prime is 129020953. The reversal of 129020941 is 149020921.

It is a happy number.

It is not a de Polignac number, because 129020941 - 2³ = 129020933 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129020911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 149770 + ... + 150628.

It is an arithmetic number, because the mean of its divisors is an integer number (9460000).

Almost surely, 2^129020941 is an apocalyptic number.

It is an amenable number.

129020941 is a deficient number, since it is larger than the sum of its proper divisors (22339059).

129020941 is an equidigital number, since it uses as much as digits as its factorization.

129020941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1408.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 129020941 is about 11358.7385303122. The cubic root of 129020941 is about 505.3047743649.

The spelling of 129020941 in words is "one hundred twenty-nine million, twenty thousand, nine hundred forty-one".