129005121470 has 16 divisors (see below), whose sum is σ = 232324381008. Its totient is φ = 51576456960.

The previous prime is 129005121451. The next prime is 129005121473. The reversal of 129005121470 is 74121500921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129005121473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3177776 + ... + 3218115.

It is an arithmetic number, because the mean of its divisors is an integer number (14520273813).

Almost surely, 2^129005121470 is an apocalyptic number.

129005121470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129005121470 is a deficient number, since it is larger than the sum of its proper divisors (103319259538).

129005121470 is a wasteful number, since it uses less digits than its factorization.

129005121470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6397915.

The product of its (nonzero) digits is 5040, while the sum is 32.

The spelling of 129005121470 in words is "one hundred twenty-nine billion, five million, one hundred twenty-one thousand, four hundred seventy".