129177070 has 16 divisors (see below), whose sum is σ = 253657008. Its totient is φ = 46973440.

The previous prime is 129177047. The next prime is 129177071. The reversal of 129177070 is 70771921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129177071) 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, 587059 + ... + 587278.

It is an arithmetic number, because the mean of its divisors is an integer number (15853563).

Almost surely, 2^129177070 is an apocalyptic number.

129177070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129177070 is a deficient number, since it is larger than the sum of its proper divisors (124479938).

129177070 is a wasteful number, since it uses less digits than its factorization.

129177070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1174355.

The product of its (nonzero) digits is 6174, while the sum is 34.

The square root of 129177070 is about 11365.6090905855. The cubic root of 129177070 is about 505.5085162977.

The spelling of 129177070 in words is "one hundred twenty-nine million, one hundred seventy-seven thousand, seventy".