129370155 has 8 divisors (see below), whose sum is σ = 206992272. Its totient is φ = 68997408.

The previous prime is 129370141. The next prime is 129370159. The reversal of 129370155 is 551073921.

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

It is not a de Polignac number, because 129370155 - 2¹⁶ = 129304619 is a prime.

It is not an unprimeable number, because it can be changed into a prime (129370159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4312324 + ... + 4312353.

It is an arithmetic number, because the mean of its divisors is an integer number (25874034).

Almost surely, 2^129370155 is an apocalyptic number.

129370155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

129370155 is a deficient number, since it is larger than the sum of its proper divisors (77622117).

129370155 is an equidigital number, since it uses as much as digits as its factorization.

129370155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8624685.

The product of its (nonzero) digits is 9450, while the sum is 33.

The square root of 129370155 is about 11374.1001841904. The cubic root of 129370155 is about 505.7602573654.

The spelling of 129370155 in words is "one hundred twenty-nine million, three hundred seventy thousand, one hundred fifty-five".