129475077 has 16 divisors (see below), whose sum is σ = 183218112. Its totient is φ = 81048320.

The previous prime is 129475067. The next prime is 129475079. The reversal of 129475077 is 770574921.

It is a cyclic number.

It is not a de Polignac number, because 129475077 - 2¹⁵ = 129442309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129475079) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20758 + ... + 26264.

It is an arithmetic number, because the mean of its divisors is an integer number (11451132).

Almost surely, 2^129475077 is an apocalyptic number.

129475077 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

129475077 is a deficient number, since it is larger than the sum of its proper divisors (53743035).

129475077 is a wasteful number, since it uses less digits than its factorization.

129475077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5988.

The product of its (nonzero) digits is 123480, while the sum is 42.

The square root of 129475077 is about 11378.7115702965. The cubic root of 129475077 is about 505.8969479296.

The spelling of 129475077 in words is "one hundred twenty-nine million, four hundred seventy-five thousand, seventy-seven".