129477073 has 4 divisors (see below), whose sum is σ = 141247728. Its totient is φ = 117706420.

The previous prime is 129477071. The next prime is 129477109. The reversal of 129477073 is 370774921.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 370774921 = 11 ⋅33706811.

It is a cyclic number.

It is not a de Polignac number, because 129477073 - 2¹ = 129477071 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129477071) 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 3 ways as a sum of consecutive naturals, for example, 5885311 + ... + 5885332.

It is an arithmetic number, because the mean of its divisors is an integer number (35311932).

Almost surely, 2^129477073 is an apocalyptic number.

It is an amenable number.

129477073 is a deficient number, since it is larger than the sum of its proper divisors (11770655).

129477073 is a wasteful number, since it uses less digits than its factorization.

129477073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11770654.

The product of its (nonzero) digits is 74088, while the sum is 40.

The square root of 129477073 is about 11378.7992776039. The cubic root of 129477073 is about 505.8995475680.

The spelling of 129477073 in words is "one hundred twenty-nine million, four hundred seventy-seven thousand, seventy-three".