129336046 has 16 divisors (see below), whose sum is σ = 224212320. Its totient is φ = 54806400.

The previous prime is 129336019. The next prime is 129336047. The reversal of 129336046 is 640633921.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129336047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50655 + ... + 53146.

It is an arithmetic number, because the mean of its divisors is an integer number (14013270).

Almost surely, 2^129336046 is an apocalyptic number.

129336046 is a deficient number, since it is larger than the sum of its proper divisors (94876274).

129336046 is a wasteful number, since it uses less digits than its factorization.

129336046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103899.

The product of its (nonzero) digits is 23328, while the sum is 34.

The square root of 129336046 is about 11372.6006700315. The cubic root of 129336046 is about 505.7158048332.

Adding to 129336046 its reverse (640633921), we get a palindrome (769969967).

The spelling of 129336046 in words is "one hundred twenty-nine million, three hundred thirty-six thousand, forty-six".