129373296 has 40 divisors (see below), whose sum is σ = 359924880. Its totient is φ = 39806976.

The previous prime is 129373291. The next prime is 129373297. The reversal of 129373296 is 692373921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129373291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103041 + ... + 104288.

It is an arithmetic number, because the mean of its divisors is an integer number (8998122).

Almost surely, 2^129373296 is an apocalyptic number.

129373296 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

129373296 is an abundant number, since it is smaller than the sum of its proper divisors (230551584).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

129373296 is a wasteful number, since it uses less digits than its factorization.

129373296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207353 (or 207347 counting only the distinct ones).

The product of its digits is 122472, while the sum is 42.

The square root of 129373296 is about 11374.2382602089. The cubic root of 129373296 is about 505.7643504787.

It can be divided in two parts, 129 and 373296, that multiplied together give a palindrome (48155184).

The spelling of 129373296 in words is "one hundred twenty-nine million, three hundred seventy-three thousand, two hundred ninety-six".