129063730 has 16 divisors (see below), whose sum is σ = 232484760. Its totient is φ = 51587712.

The previous prime is 129063719. The next prime is 129063743. The reversal of 129063730 is 37360921.

It can be written as a sum of positive squares in 4 ways, for example, as 98227921 + 30835809 = 9911^2 + 5553^2 .

It is a junction number, because it is equal to n+sod(n) for n = 129063692 and 129063701.

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, 12676 + ... + 20464.

Almost surely, 2^129063730 is an apocalyptic number.

129063730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129063730 is a deficient number, since it is larger than the sum of its proper divisors (103421030).

129063730 is a wasteful number, since it uses less digits than its factorization.

129063730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9453.

The product of its (nonzero) digits is 6804, while the sum is 31.

The square root of 129063730 is about 11360.6219019911. The cubic root of 129063730 is about 505.3606285957.

The spelling of 129063730 in words is "one hundred twenty-nine million, sixty-three thousand, seven hundred thirty".