129426222 has 32 divisors (see below), whose sum is σ = 267400224. Its totient is φ = 41731200.

The previous prime is 129426197. The next prime is 129426251. The reversal of 129426222 is 222624921.

It is a super-2 number, since 2×129426222² = 33502293882386568, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 129426222.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 38572 + ... + 41792.

It is an arithmetic number, because the mean of its divisors is an integer number (8356257).

Almost surely, 2^129426222 is an apocalyptic number.

129426222 is an abundant number, since it is smaller than the sum of its proper divisors (137974002).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

129426222 is a wasteful number, since it uses less digits than its factorization.

129426222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3444.

The product of its digits is 6912, while the sum is 30.

The square root of 129426222 is about 11376.5645956941. The cubic root of 129426222 is about 505.8333096726.

The spelling of 129426222 in words is "one hundred twenty-nine million, four hundred twenty-six thousand, two hundred twenty-two".