129344690 has 8 divisors (see below), whose sum is σ = 232820460. Its totient is φ = 51737872.

The previous prime is 129344689. The next prime is 129344701. The reversal of 129344690 is 96443921.

It can be written as a sum of positive squares in 2 ways, for example, as 126945289 + 2399401 = 11267^2 + 1549^2 .

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

It is a super-2 number, since 2×129344690² = 33460097662392200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6467225 + ... + 6467244.

Almost surely, 2^129344690 is an apocalyptic number.

129344690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129344690 is a deficient number, since it is larger than the sum of its proper divisors (103475770).

129344690 is a wasteful number, since it uses less digits than its factorization.

129344690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12934476.

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 129344690 is about 11372.9806998869. The cubic root of 129344690 is about 505.7270708599.

The spelling of 129344690 in words is "one hundred twenty-nine million, three hundred forty-four thousand, six hundred ninety".