129490118 has 8 divisors (see below), whose sum is σ = 194720760. Its totient is φ = 64583200.

The previous prime is 129490117. The next prime is 129490171. The reversal of 129490118 is 811094921.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129490117) 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, 79928 + ... + 81531.

It is an arithmetic number, because the mean of its divisors is an integer number (24340095).

Almost surely, 2^129490118 is an apocalyptic number.

129490118 is a deficient number, since it is larger than the sum of its proper divisors (65230642).

129490118 is a wasteful number, since it uses less digits than its factorization.

129490118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161862.

The product of its (nonzero) digits is 5184, while the sum is 35.

The square root of 129490118 is about 11379.3724783048. The cubic root of 129490118 is about 505.9165370314.

The spelling of 129490118 in words is "one hundred twenty-nine million, four hundred ninety thousand, one hundred eighteen".