129036481 has 16 divisors (see below), whose sum is σ = 151562880. Its totient is φ = 107573760.

The previous prime is 129036473. The next prime is 129036487. The reversal of 129036481 is 184630921.

It is not a de Polignac number, because 129036481 - 2³ = 129036473 is a prime.

It is a super-2 number, since 2×129036481² = 33300826857726722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (129036487) 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, 38451 + ... + 41671.

It is an arithmetic number, because the mean of its divisors is an integer number (9472680).

Almost surely, 2^129036481 is an apocalyptic number.

It is an amenable number.

129036481 is a deficient number, since it is larger than the sum of its proper divisors (22526399).

129036481 is an equidigital number, since it uses as much as digits as its factorization.

129036481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3384.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 129036481 is about 11359.4225645497. The cubic root of 129036481 is about 505.3250607900.

The spelling of 129036481 in words is "one hundred twenty-nine million, thirty-six thousand, four hundred eighty-one".