129529445 has 8 divisors (see below), whose sum is σ = 162193536. Its totient is φ = 99118096.

The previous prime is 129529397. The next prime is 129529453. The reversal of 129529445 is 544925921.

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 129529445 - 2⁸ = 129529189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 563057 + ... + 563286.

It is an arithmetic number, because the mean of its divisors is an integer number (20274192).

Almost surely, 2^129529445 is an apocalyptic number.

It is an amenable number.

129529445 is a deficient number, since it is larger than the sum of its proper divisors (32664091).

129529445 is a wasteful number, since it uses less digits than its factorization.

129529445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1126371.

The product of its digits is 129600, while the sum is 41.

The square root of 129529445 is about 11381.1003422340. The cubic root of 129529445 is about 505.9677485732.

The spelling of 129529445 in words is "one hundred twenty-nine million, five hundred twenty-nine thousand, four hundred forty-five".