129417119 has 4 divisors (see below), whose sum is σ = 139372296. Its totient is φ = 119461944.

The previous prime is 129417091. The next prime is 129417121. The reversal of 129417119 is 911714921.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 129417119 - 2¹² = 129413023 is a prime.

It is a super-2 number, since 2×129417119² = 33497581380520322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129417139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4977569 + ... + 4977594.

It is an arithmetic number, because the mean of its divisors is an integer number (34843074).

Almost surely, 2^129417119 is an apocalyptic number.

129417119 is a deficient number, since it is larger than the sum of its proper divisors (9955177).

129417119 is an equidigital number, since it uses as much as digits as its factorization.

129417119 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9955176.

The product of its digits is 4536, while the sum is 35.

The square root of 129417119 is about 11376.1645118203. The cubic root of 129417119 is about 505.8214503845.

The spelling of 129417119 in words is "one hundred twenty-nine million, four hundred seventeen thousand, one hundred nineteen".