129494668 has 6 divisors (see below), whose sum is σ = 226615676. Its totient is φ = 64747332.

The previous prime is 129494663. The next prime is 129494683. The reversal of 129494668 is 866494921.

It is not an unprimeable number, because it can be changed into a prime (129494663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16186830 + ... + 16186837.

Almost surely, 2^129494668 is an apocalyptic number.

It is an amenable number.

129494668 is a deficient number, since it is larger than the sum of its proper divisors (97121008).

129494668 is a wasteful number, since it uses less digits than its factorization.

129494668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32373671 (or 32373669 counting only the distinct ones).

The product of its digits is 746496, while the sum is 49.

The square root of 129494668 is about 11379.5723996994. The cubic root of 129494668 is about 505.9224625628.

The spelling of 129494668 in words is "one hundred twenty-nine million, four hundred ninety-four thousand, six hundred sixty-eight".