129743706 has 32 divisors (see below), whose sum is σ = 266286528. Its totient is φ = 42128640.

The previous prime is 129743699. The next prime is 129743729. The reversal of 129743706 is 607347921.

It is a super-2 number, since 2×129743706² = 33666858493228872, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37506 + ... + 40818.

It is an arithmetic number, because the mean of its divisors is an integer number (8321454).

Almost surely, 2^129743706 is an apocalyptic number.

129743706 is an abundant number, since it is smaller than the sum of its proper divisors (136542822).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

129743706 is a wasteful number, since it uses less digits than its factorization.

129743706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3486.

The product of its (nonzero) digits is 63504, while the sum is 39.

The square root of 129743706 is about 11390.5094706075. The cubic root of 129743706 is about 506.2465769011.

The spelling of 129743706 in words is "one hundred twenty-nine million, seven hundred forty-three thousand, seven hundred six".