129039802 has 8 divisors (see below), whose sum is σ = 196286112. Its totient is φ = 63611100.

The previous prime is 129039749. The next prime is 129039803. The reversal of 129039802 is 208930921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (129039803) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 454224 + ... + 454507.

It is an arithmetic number, because the mean of its divisors is an integer number (24535764).

Almost surely, 2^129039802 is an apocalyptic number.

129039802 is a deficient number, since it is larger than the sum of its proper divisors (67246310).

129039802 is an equidigital number, since it uses as much as digits as its factorization.

129039802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 908804.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 129039802 is about 11359.5687418141. The cubic root of 129039802 is about 505.3293959210.

The spelling of 129039802 in words is "one hundred twenty-nine million, thirty-nine thousand, eight hundred two".