129421711706 has 32 divisors (see below), whose sum is σ = 232904540160. Its totient is φ = 52767414000.

The previous prime is 129421711687. The next prime is 129421711711. The reversal of 129421711706 is 607117124921.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2501570 + ... + 2552781.

It is an arithmetic number, because the mean of its divisors is an integer number (7278266880).

Almost surely, 2^129421711706 is an apocalyptic number.

129421711706 is a deficient number, since it is larger than the sum of its proper divisors (103482828454).

129421711706 is a wasteful number, since it uses less digits than its factorization.

129421711706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5054450.

The product of its (nonzero) digits is 42336, while the sum is 41.

The spelling of 129421711706 in words is "one hundred twenty-nine billion, four hundred twenty-one million, seven hundred eleven thousand, seven hundred six".