129226406 has 8 divisors (see below), whose sum is σ = 197964000. Its totient is φ = 63238408.

The previous prime is 129226403. The next prime is 129226411. The reversal of 129226406 is 604622921.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129226403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 687281 + ... + 687468.

It is an arithmetic number, because the mean of its divisors is an integer number (24745500).

Almost surely, 2^129226406 is an apocalyptic number.

129226406 is a deficient number, since it is larger than the sum of its proper divisors (68737594).

129226406 is a wasteful number, since it uses less digits than its factorization.

129226406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1374798.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 129226406 is about 11367.7792906091. The cubic root of 129226406 is about 505.5728636151.

The spelling of 129226406 in words is "one hundred twenty-nine million, two hundred twenty-six thousand, four hundred six".