129005247724 has 24 divisors (see below), whose sum is σ = 233190429696. Its totient is φ = 62382066000.

The previous prime is 129005247713. The next prime is 129005247731. The reversal of 129005247724 is 427742500921.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136312 + ... + 525919.

It is an arithmetic number, because the mean of its divisors is an integer number (9716267904).

Almost surely, 2^129005247724 is an apocalyptic number.

It is an amenable number.

129005247724 is a deficient number, since it is larger than the sum of its proper divisors (104185181972).

129005247724 is a wasteful number, since it uses less digits than its factorization.

129005247724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 663837 (or 663835 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 43.

The spelling of 129005247724 in words is "one hundred twenty-nine billion, five million, two hundred forty-seven thousand, seven hundred twenty-four".