129040630 has 16 divisors (see below), whose sum is σ = 234574704. Its totient is φ = 51104800.

The previous prime is 129040621. The next prime is 129040651. The reversal of 129040630 is 36040921.

It is a junction number, because it is equal to n+sod(n) for n = 129040595 and 129040604.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 62872 + ... + 64891.

It is an arithmetic number, because the mean of its divisors is an integer number (14660919).

Almost surely, 2^129040630 is an apocalyptic number.

129040630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129040630 is a deficient number, since it is larger than the sum of its proper divisors (105534074).

129040630 is a wasteful number, since it uses less digits than its factorization.

129040630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127871.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 129040630 is about 11359.6051868012. The cubic root of 129040630 is about 505.3304767550.

The spelling of 129040630 in words is "one hundred twenty-nine million, forty thousand, six hundred thirty".