129223190 has 16 divisors (see below), whose sum is σ = 240105600. Its totient is φ = 50021760.

The previous prime is 129223187. The next prime is 129223201. The reversal of 129223190 is 91322921.

It is a super-2 number, since 2×129223190² = 33397265667552200, which contains 22 as substring.

It is a Curzon number.

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, 208115 + ... + 208734.

It is an arithmetic number, because the mean of its divisors is an integer number (15006600).

Almost surely, 2^129223190 is an apocalyptic number.

129223190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129223190 is a deficient number, since it is larger than the sum of its proper divisors (110882410).

129223190 is a wasteful number, since it uses less digits than its factorization.

129223190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416887.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 129223190 is about 11367.6378372994. The cubic root of 129223190 is about 505.5686695914.

The spelling of 129223190 in words is "one hundred twenty-nine million, two hundred twenty-three thousand, one hundred ninety".