129376245 has 8 divisors (see below), whose sum is σ = 207002016. Its totient is φ = 69000656.

The previous prime is 129376231. The next prime is 129376267. The reversal of 129376245 is 542673921.

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 129376245 - 2¹⁰ = 129375221 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4312527 + ... + 4312556.

It is an arithmetic number, because the mean of its divisors is an integer number (25875252).

Almost surely, 2^129376245 is an apocalyptic number.

129376245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

129376245 is a deficient number, since it is larger than the sum of its proper divisors (77625771).

129376245 is an equidigital number, since it uses as much as digits as its factorization.

129376245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8625091.

The product of its digits is 90720, while the sum is 39.

The square root of 129376245 is about 11374.3678945250. The cubic root of 129376245 is about 505.7681933319.

The spelling of 129376245 in words is "one hundred twenty-nine million, three hundred seventy-six thousand, two hundred forty-five".