129426105 has 8 divisors (see below), whose sum is σ = 207081792. Its totient is φ = 69027248.

The previous prime is 129426103. The next prime is 129426107. The reversal of 129426105 is 501624921.

It is an interprime number because it is at equal distance from previous prime (129426103) and next prime (129426107).

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

It is a cyclic number.

It is not a de Polignac number, because 129426105 - 2¹ = 129426103 is a prime.

It is a super-2 number, since 2×129426105² = 33502233310942050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (129426103) 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 7 ways as a sum of consecutive naturals, for example, 4314189 + ... + 4314218.

It is an arithmetic number, because the mean of its divisors is an integer number (25885224).

Almost surely, 2^129426105 is an apocalyptic number.

129426105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

129426105 is a deficient number, since it is larger than the sum of its proper divisors (77655687).

129426105 is an equidigital number, since it uses as much as digits as its factorization.

129426105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8628415.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 129426105 is about 11376.5594535431. The cubic root of 129426105 is about 505.8331572498.

The spelling of 129426105 in words is "one hundred twenty-nine million, four hundred twenty-six thousand, one hundred five".