129438110 has 16 divisors (see below), whose sum is σ = 235052496. Its totient is φ = 51316608.

The previous prime is 129438109. The next prime is 129438149. The reversal of 129438110 is 11834921.

It is a congruent number.

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, 56144 + ... + 58403.

It is an arithmetic number, because the mean of its divisors is an integer number (14690781).

Almost surely, 2^129438110 is an apocalyptic number.

129438110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129438110 is a deficient number, since it is larger than the sum of its proper divisors (105614386).

129438110 is a wasteful number, since it uses less digits than its factorization.

129438110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114667.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 129438110 is about 11377.0870612824. The cubic root of 129438110 is about 505.8487963908.

The spelling of 129438110 in words is "one hundred twenty-nine million, four hundred thirty-eight thousand, one hundred ten".