129541207 has 8 divisors (see below), whose sum is σ = 137316816. Its totient is φ = 121782912.

The previous prime is 129541199. The next prime is 129541211. The reversal of 129541207 is 702145921.

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 129541207 - 2³ = 129541199 is a prime.

It is a super-2 number, since 2×129541207² = 33561848622033698, 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 (129541807) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13128 + ... + 20770.

It is an arithmetic number, because the mean of its divisors is an integer number (17164602).

Almost surely, 2^129541207 is an apocalyptic number.

129541207 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

129541207 is a deficient number, since it is larger than the sum of its proper divisors (7775609).

129541207 is an equidigital number, since it uses as much as digits as its factorization.

129541207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8657.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 129541207 is about 11381.6170643718. The cubic root of 129541207 is about 505.9830630127.

It can be divided in two parts, 12954 and 1207, that added together give a square (14161 = 119²).

The spelling of 129541207 in words is "one hundred twenty-nine million, five hundred forty-one thousand, two hundred seven".